http://rockhopper.monmouth.edu/cs/jchung/ 2026-05-12T02:22:19+00:00 http://rockhopper.monmouth.edu/cs/jchung/ http://rockhopper.monmouth.edu/cs/jchung/_media/wiki/logo.png text/html 2013-02-11T17:45:53+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/accessor_and_mutator_methods_1?rev=1360604753 ---------- See the code below: public void onScannedRobot(ScannedRobotEvent e) { // 1 - Get distance to other robot. double distance; distance = e.getDistance(); // Stuff omitted... } In the above code, the getDistance() method is an example of a(n) text/html 2013-02-11T19:26:13+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/accessor_and_mutator_methods_2?rev=1360610773 ---------- See the code below: public void run() { // Stuff omitted... setColors(Color.red,Color.blue,Color.green); // body,gun,radar In the above code, the setColors() method is an example of a(n) ... <multipoll Mutator or Accessor?> text/html 2013-02-11T19:34:11+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/accessor_and_mutator_methods_3?rev=1360611251 ---------- See the code below: // Robot main loop while(true) { // 3 - Move in a circle to the left or right. ahead(5); turnRight(direction); // 4 - If back at starting position, move in a circle in the opposite direction. // - Use direction variable from 2. currentHeading = getHeading(); text/html 2014-10-13T21:40:36+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/adjustfirebot_template?rev=1413236436 AdjustFireBot2 template ---------- import robocode.*; // API help : http://robocode.sourceforge.net/docs/robocode/robocode/Robot.html /** * AdjustFireBot2 - a robot by (your name here) */ public class AdjustFireBot2 extends Robot { // Declare instance variables for this robot here: private double height; // field height private double width; // field width private double maxDist; // Max distance = distance from one corner of the … text/html 2011-09-22T21:26:51+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/alice_class_level_and_world_level_methods?rev=1316726811 Tutorial: Class Level and World Level Methods ---------- Loading the World Download the file that we'll be working with today. Save it in a directory that you can find again, and then start Alice and open the world. First: After you have opened the file, and set up your world, go into the text/html 2011-09-22T21:53:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/alice_events?rev=1316728410 Events Tutorial ---------- What are events? In video games and other interactive systems, events happen and we might need to respond to them. We will learn to make Alice programs respond to mouse clicks and keyboard presses, as well as handing some camera control over to the user. text/html 2011-09-29T20:02:46+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/alice_methods_continued_and_properties?rev=1317326566 More On Methods, Properties ---------- * We will complete the Alice program that you started in the Class Level and World Level Methods tutorial. Loading the World * For this tutorial, you can use your completed version (methodStart.a2w) from Class Level and World Level Methods tutorial. Or you can download a completed version here. text/html 2013-05-02T16:40:19+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/arrays_1?rev=1367512819 The following code contains an array: 1 // cs175HelloWorld.java: First program in Java in CS-175 2 // 3 // J. Chung 4 // 1/28/2013 5 6 public class cs175HelloWorld { 7 8 public static void main( String[] args ) { 9 10 System.out.println("Hello, Hoboken!"); 11 } 12 } text/html 2013-05-02T17:18:46+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/arrays_2?rev=1367515126 In the following code, how many times does the for loop repeat? final int ARRAY_SIZE = 20; int[] values = new int[ARRAY_SIZE]; for ( int i = 0; i < values.length; i++ ) { values[i] = 0; } <poll How many for loop repetitions? [000]> * 0 * text/html 2013-05-02T17:27:22+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/arrays_3?rev=1367515642 Where is the error in the following code? 1 String[] answers = new String[5]; 2 3 answers[1] = "It is certain."; 4 answers[2] = "It is decidedly so."; 5 answers[3] = "Without a doubt."; 6 answers[4] = "Yes definitely."; 7 answers[5] = "You may rely on it."; text/html 2014-12-04T21:20:47+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/arrays_lab_-_magic_8-ball?rev=1417728047 Magic8Ball Simulation ---------- * Topics: Arrays, Strings ---------- Write a program Magic8Ball.java to do the following: * In a loop: * Using Scanner, input any question from the user as a String. * If the user inputs “quit”, then exit the loop immediately. text/html 2014-12-09T21:00:46+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/arrays_lab_-_sum_of_dice?rev=1418158846 SumOfDiceArray - Simulate rolling a pair of dice ---------- * Topics: Arrays, Strings, Loops ---------- Use an array of Strings to implement the SumOfDice program. Write a program SumOfDiceArray.java that simulates rolling a pair of 6-sided dice 100 times. text/html 2013-02-07T18:48:03+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/assignment_operator?rev=1360262883 The assignment operator in Java is __. a. := b. = c. == d. <- <poll Choose one [9]> * a * b * c * d </poll> text/html 2019-06-22T04:00:22+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/centerbot3_approach?rev=1561176022 CenterBot Approach #3 - Trigonometry Functions ---------- The Java Math.atan2 (arctangent2) method can be used. Math.atan2(centerY - myY, centerX - myX) computes the angles shown below. The angles will always be measured from the same horizontal base. Clockwise angles will be negative, and counterclockwise angles will be positive. text/html 2019-06-22T04:04:17+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/centerbot3_template?rev=1561176257 CenterBot template * for Approach #3 (trig functions) ---------- import robocode.*; /** * CenterBot - a robot by J. Chung */ public class CenterBot3 extends Robot { // Approach #3: Once you know the x,y coordinates of the center of // the arena, point robot in direction of center, compute distance // to center, move ahead to center. // Declare some robot variables here: private double centerX; private double centerY; /** * run: CenterBot's default beha… text/html 2014-10-13T21:25:39+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/centerbot_template?rev=1413235539 CenterBot template * for Approach #1 ---------- import robocode.*; // API help : http://robocode.sourceforge.net/docs/robocode/robocode/Robot.html // Approach #1: Get robot's current heading. Turn robot to point north (heading=0). // Move robot ahead or back to get to middle of screen vertically. Turn robot to // point east (heading=90). Move robot ahead or back to get to middle of screen // horizontally. /** * CenterBot - a robot by (your name here) */ public class CenterBot extends R… text/html 2014-10-29T04:34:23+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/chess_squares_-_noloop?rev=1414557263 ChessSquares class ---------- Topics: Strings, Input, Selection (if-else) Each square on a chess board can be described by a letter and number: The following pseudocode describes an algorithm that determines whether a square with a given letter and number is dark or light. text/html 2013-03-07T17:34:32+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/classes_and_programs_1?rev=1362677672 See the code below: /** A bank account has a balance that can be changed by deposits and withdrawals. */ public class BankAccount { private double balance; public void deposit(double amount) { double newBalance = balance + amount; balance = newBalance; } public void withdraw(double amount) { double newBalance = balance - amount; balance = newBalance; } public double getBalance() { return balance; } } text/html 2013-02-28T19:22:02+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/class_implementation_1?rev=1362079322 See the following code: /** Uses and tests the BankAccount class (pp. 86-87 of book) */ public class TestBankAccount { public static void main(String[] args) { BankAccount momsSavings = new BankAccount(1000); double momsBalance = momsSavings.getBalance(); System.out.println( "Mom's account balance: " + momsBalance ); } } text/html 2013-02-28T19:32:28+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/class_implementation_2?rev=1362079948 See the following code: /** Uses and tests the BankAccount class (pp. 86-87 of book) */ public class TestBankAccount { public static void main(String[] args) { BankAccount momsSavings = new BankAccount(); momsSavings.deposit( 1000.00 ); double momsBalance = momsSavings.getBalance(); System.out.println( "Mom's account balance: " + momsBalance ); } } text/html 2013-03-07T18:00:05+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/class_methods_1?rev=1362679205 See the definition of the CashRegister class (based on pp. 88-89 of book): /** * Cash register class based on pp. 88-89 of book. * Totals up sales and computes change due. */ public class CashRegister { // CashRegister instance variables: private double cashBalance; // amount that register currently has private double purchase; // amount of customer purchase private double payment; // amount paid by customer /** * Constructs a cash register with $500.00 in … text/html 2013-02-21T18:04:34+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/class_public_interface_1?rev=1361469874 See the following code: /** * SpiralBot - a robot by (your name here) */ public class SpiralBot extends Robot { private String botname = "Fred"; /** * run: SpiralBot's default behavior */ public void run() { // Stuff omitted. } /** * Gets robot's name * * @return botname - robot's name */ public String getBotName() { return botname; } text/html 2013-02-28T18:53:41+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/class_public_interface_2?rev=1362077621 ---------- See the code below (BankAccount class from pp. 86-87 of book): /** A bank account has a balance that can be changed by deposits and withdrawals. */ public class BankAccount { private double balance; /** Constructs a bank account with a zero balance. */ public BankAccount() { balance = 0; } /** Constructs a bank account with a given balance. @param initialBalance the initial balance */ public BankAccount(double initia… text/html 2013-02-28T19:04:46+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/class_public_interface_2a?rev=1362078286 ---------- See the code below (BankAccount class from pp. 86-87 of book): /** A bank account has a balance that can be changed by deposits and withdrawals. */ public class BankAccount { private double balance; /** Constructs a bank account with a zero balance. */ public BankAccount() { balance = 0; } /** Constructs a bank account with a given balance. @param initialBalance the initial balance */ public BankAccount(double initia… text/html 2013-02-28T17:49:23+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/class_public_interface_3?rev=1362073763 ---------- See the code below (BankAccount class from pp. 86-87 of book): /** A bank account has a balance that can be changed by deposits and withdrawals. */ public class BankAccount { private double balance; /** Constructs a bank account with a zero balance. */ public BankAccount() { balance = 0; } /** Constructs a bank account with a given balance. @param initialBalance the initial balance */ public BankAccount(double initia… text/html 2014-10-21T18:21:49+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/constructors_1?rev=1413915709 See the definition of the CashRegister class: /** * Cash register class: * Totals up sales and computes change due. */ public class CashRegister { // CashRegister instance variables: private double cashBalance; // amount that register currently has private double purchase; // amount of customer purchase private double payment; // amount paid by customer /** * Records the sale of an item. * @param amount the price of the item */ public void … text/html 2024-07-22T17:32:51+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_dice_roll_frequency_class?rev=1721669571 ---------- Lab Program: DiceRolls.java ---------- (See lab solutions on cssegit.) In this lab, we'll write the DiceRolls.java program to simulate the rolling of a pair of dice 100 times. Assume 6-sided dice. Use the randbetween() method from previous programs again. Using an array, keep a count of the sums of the dice rolls. text/html 2014-10-23T02:31:25+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_fa14_first_robocode_tournament?rev=1414031485 ---------- First Robocode Tournament (Lab Test 1) Thursday, 10/23, 4:30pm, 6:30pm The first Robocode tournament will count as Lab Test 1. The tournament will be held during class. I'm going to allow TEAMS OF TWO OR THREE to submit one robot for the tournament. This is optional. If you want to work alone, you may. If you're in a team, all of you in the team will get the same grade for Lab Test 1. If you're going to be in a team, you must let me know the team members by the end of Thursday (10… text/html 2024-07-22T17:33:31+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_magic_eight_ball_class_version_1?rev=1721669611 Programming Lab Exercise (See lab solutions on cssegit.) ---------- * Topics: Arrays, Strings, Math.random MagicEightBall1.java, TestMagicEightBall1.java Define a class called MagicEightBall1. An object of this class is used to represent a Magic 8-Ball. The attributes (private instance variables) of the MagicEightBall1 class are the following: text/html 2014-04-23T16:34:49+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_magic_eight_ball_class_version_2?rev=1398270889 Programming Lab Exercise ---------- * Topics: Introduction to Arrays, Classes, Strings, Math.random MagicEightBall2.java, TestMagicEightBall2.java (In this lab exercise, you'll modify version 1 of the Magic Eight Ball class.) Define a class called MagicEightBall2. An object of this class is used to represent a text/html 2013-05-02T16:41:42+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_arrays?rev=1367512902 Arrays ---------- Topics * Horstmann Chapter 7: 7.1 and 7.6 ---------- Thu, 5/2/13 * Arrays 1 * Arrays 2 * Arrays 3 ---------- text/html 2014-10-09T20:21:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_chesssquares_class?rev=1412886090 ChessSquares class, input loop example ---------- Topics: Loops, Strings, Input, Selection (if-else) Each square on a chess board can be described by a letter and number: The following pseudocode describes an algorithm that determines whether a square with a given letter and number is dark or light. text/html 2014-02-07T20:59:24+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_cornerbot?rev=1391806764 CornerBot - visits all corners of the room ---------- ... omitted ---------- (Updated Mon 3/4) * Using movement methods developed in MethodBot) ... omitted ---------- text/html 2024-07-23T22:42:38+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_counter_class?rev=1721774558 Programming Lab Exercise Counter2.java, TestCounter2.java Define a class called Counter2. An object of this class is used to count things, so it records a count that is a non-negative whole number. Include methods to set the counter to 0, to increase the count by 1, and to decrease the count by 1. Also include an accessor method that returns the current count value, as well as a method that displays the count on the screen. Do not define an input method. The only method that can set the coun… text/html 2013-05-13T00:22:43+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_first_robocode_tournament?rev=1368404563 ---------- First Robocode Tournament (Lab Test 1) (UPDATE: See the Results spreadsheet.) Monday, 3/11, 1pm The first Robocode tournament will count as Lab Test 1. The tournament will be held during class. I'm going to allow TEAMS OF TWO to submit one robot for the tournament. This is optional. If you want to work alone, you may. If you're in a team of two, both of you will get the same grade for Lab Test 1. If you're going to be in a team, you must let me know the team members by the end of… text/html 2013-03-07T17:57:54+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_introduction_to_classes?rev=1362679074 Introduction to Classes ---------- Topics: * Horstmann Chapter 3: 3.1 - 3.5 ---------- Thu, 2/21/13 * Instance Variables 1 * Instance Variables 2 * Class Public Interface 1 Thu, 2/28/13 * Instance Variables 3 * Class Public Interface 2 * Class Public Interface 2a * Class Public Interface 3 * Class implementation 1 * Class implementation 2 Thu, 3/7/13 * Local and Parameter Variables 1 * Local and Parameter Variables 2 * Classes and Programs 1 * Constructors 1… text/html 2013-05-24T12:55:11+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_magiceightball_class?rev=1369400111 Programming Lab Exercise * Topics: Introduction to Arrays, Strings, Math.random MagicEightBall.java, TestMagicEightBall.java Define a class called MagicEightBall. An object of this class is used to represent a Magic 8-Ball. The attributes (private instance variables) of the MagicEightBall class are the following: text/html 2014-02-07T20:59:41+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_methodbot?rev=1391806781 MethodBot - contains useful methods in one place * Use this robot to develop and hold useful methods that might come in handy in later robots. ---------- ... omitted ---------- text/html 2014-03-10T16:46:02+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_nearestwallbot?rev=1394469962 Omitted ... text/html 2013-04-01T23:09:48+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_oddevenscanner?rev=1364857788 Oddeven.java developed in class on 4/1/13: /** * OddEven.java * * J. Chung * 4/1/13 * * Write a program called OddEven.java that contains a class OddEven and a main() method. * In the main() method, use the Java Scanner class to input an * integer from the keyboard and test whether the input number is odd or even. */ import java.util.Scanner; // Need to declare Scanner object for input public class OddEven { public static void main( String[] args ) { Scanner keyboard =… text/html 2013-04-08T19:01:24+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_oddevenscannerloops?rev=1365447684 Three versions of a looping OddEven program were developed in class on 4/8/13. All three versions repeatedly input the user for an integer to determine if it is an even or odd number. ---------- Version 1 - while(true) loop * This version uses a simple while(true) loop that repeats until the user manually terminates the program. text/html 2013-02-15T01:06:52+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_randomturnbot?rev=1360890412 Robocode random turns using Math.random() method /** * run: RandomTurnBot's default behavior */ public void run() { // Robot main loop while(true) { // Make random turns to either left or right (-90 deg, +90 deg): int turn = (int)(Math.random() * 2); // turn = either 0 or 1 if ( turn == 1 ) { // right turn turnRight( 90 ); } else { // left turn turnL… text/html 2013-02-21T17:20:10+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_randomturnbot_with_randbetween_method?rev=1361467210 Robocode random turns using randbetween() method ---------- /** * run: RandomTurnBot's default behavior */ public void run() { // Robot main loop while(true) { // Make random turns to either left or right (-90 deg, +90 deg): // (See the randbetween() method definition below the run() method.) int turn = randbetween( 0, 1 ); if ( turn == 1 ) { // right turn turnRight( 90 ); } … text/html 2013-04-11T16:52:07+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_repetition?rev=1365699127 Loops ---------- Topics * Horstmann Chapter 6: 6.1-6.5 ---------- Mon, 4/8/13 * While Loop 1 * While Loop 2 * While Loop 3 * While Loop 4 Thu, 4/11/13 * For Loop 1 * For Loop 2 * For Loop 3 * For Loop 4 ---------- text/html 2014-02-07T18:44:56+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_robocode_figure_eight_run_algorithm?rev=1391798696 Algorithm for Robocode figure eight movement /** * run: Toast2's default behavior */ public void run() { // Stuff omitted ... // Algorithm: Do a figure eight // Summary: If you've done a full circle, make a circle in the other direction. // 1 - Store starting position = Store robot's starting heading angle // 2 - Store circle direction in a variable // Robot main loop while(true) { // 3 … text/html 2013-02-07T17:54:02+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_robocode_figure_eight_run_algorithm_-_robocode_figure_eight_run_algorithm?rev=1360259642 Algorithm for Robocode figure eight movement /** * run: Toast2's default behavior */ public void run() { // Stuff omitted ... // Algorithm: Do a figure eight // Summary: If you've done a full circle, make a circle in the other direction. // 1 - Store starting position = Store robot's starting heading angle // 2 - Store circle direction in a variable // Robot main loop while(true) { // 3 … text/html 2014-10-13T14:33:31+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_robocode_select_fire_with_variables?rev=1413210811 Making decisions in Robocode methods ---------- * A Robocode robot can fire its cannon using variable power. The higher the power used in firing, the greater the energy drain. Also, a “heavier” cannon shot travels more slowly, while a “lighter text/html 2014-02-07T19:25:27+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_robocode_select_fire_with_variables_-_robocode_select_fire_with_variables?rev=1391801127 Using variables in Robocode methods Change fire power based on opposing robot distance ... omitted text/html 2013-04-08T18:46:27+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_scanner_input_example?rev=1365446787 (This is a Scanner input example. See the book, Section 4.6.) Write a program called OddEven.java that contains a class OddEven and a main() method. In the main() method, use the Java Scanner class to input an integer from the keyboard and test whether the input number is odd or even. text/html 2014-03-05T17:52:07+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_spiralbot?rev=1394041927 SpiralBot that chooses movement based on a variable * This version of SpiralBot demonstrates adding and using methods and changing behavior using a variable. ... ... Lines omitted ... /** * SpiralBot - a robot by (your name here) */ public class SpiralBot extends Robot { // Declare needed variables: int movement = 1; // 1 = spiral, 2 = default double N = 15; /** * run: SpiralBot's default behavior */ public void run() { // Robot main loop … text/html 2013-04-01T17:54:58+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_strings_input_and_selection?rev=1364838898 Strings, Input and Selection ---------- Topics * Horstmann Chapter 4: 4.5-4.6 and Chapter 5: 5.1-5.4 ---------- Mon, 3/25/13 * If Structures 1 * If Else Structure 1 * Relational Operators 1 * Multi-level If 1 Mon, 4/1/13 * String Basics 1 * String Basics 2 * String Basics 3 * Logical Operators 1 * Logical Operators 1b * Logical Operators 2 * Logical Operators 3 ---------- text/html 2013-04-05T13:34:36+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_teamplayerbot?rev=1365168876 Robocode: TeamPlayerBot ---------- * Topics covered: Strings (4.5, p. 134), String comparisons (5.2.3, p. 158) ---------- Write a variant of the robocode Default robot called TeamPlayerBot that is designed to be played in a team battle (2 vs 2). text/html 2018-01-23T14:51:18+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_timeofday_class?rev=1516719078 Programming Lab Exercise * Topics: Introduction to Classes, Strings, Selection, Loops TimeOfDay.java, TestTimeOfDay.java Define a class called TimeOfDay. An object of this class is used to represent a time of day in hours:minutes, e.g. 4:30, 16:00, 18:45. For simplicity, time is presented as military time (no AM or PM). text/html 2013-02-14T18:08:23+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp13_types_and_variables?rev=1360865303 Types, Variables, Methods ---------- Topics: * Horstmann Chapter 2: 2.1 - 2.10 ---------- Horstmann Chapter 2: 2.1 - 2.5 Thu, 2/7/13 * Variable declaration * Variable assignment * Assignment operator * Type memory usage * Int variables * Double variables * Type casting Mon, 2/11/13 * Methods 1 * Methods 2 * Method input parameters Horstmann Chapter 2: 2.6 - 2.10 * Accessor and mutator methods 1 * text/html 2014-03-05T17:38:41+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp14_first_robocode_tournament?rev=1394041121 ---------- First Robocode Tournament (Lab Test 1) Wednesday, 3/12, 1pm The first Robocode tournament will count as Lab Test 1. The tournament will be held during class. I'm going to allow TEAMS OF TWO to submit one robot for the tournament. This is optional. If you want to work alone, you may. If you're in a team of two, both of you will get the same grade for Lab Test 1. If you're going to be in a team, you must let me know the team members by the end of Monday, 2/24. text/html 2014-09-26T02:39:17+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_sp14_robocode_centerbot_with_methods?rev=1411699157 CenterBot Using A Method text/html 2012-02-28T18:00:32+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs-175_supplemental_repetition_exercises?rev=1330452032 1. WeightTable.java: (Conversion from kilograms to pounds) Write a program WeightTable.java that displays the following table from 1 to 199 Kilograms using a for loop. Kilograms Pounds 1 2.2 3 6.6 ... (lines between 3 and 197 kg omitted for brevity) ... 197 433.4 199 437.8 text/html 2010-02-04T17:21:17+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs175-2_sp10_hw2?rev=1265304077 CS 175-02, Homework 2 ---------- * Due Feb. 9, 11:59pm * Save all work under your ~/cs175/homework/hw2 folder, so that it can be collected at the deadline. Assignment * Write a program that displays the number of days until Spring Break in a dialog box. text/html 2010-02-16T14:41:56+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs175-2_sp10_hw3?rev=1266331316 CS 175-02, Homework 3 ---------- * Due Feb. 16, 11:59pm * Save all work under your ~/cs175/homework/hw3 folder, so that it can be collected at the deadline. * Try to think about the problem before you start writing code. Working the program out in text/html 2010-02-18T18:28:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs175-2_sp10_hw4?rev=1266517692 CS 175-02, Homework 4 ---------- * Due Feb. 23, 11:59pm * Save all work under your ~/cs175/homework/hw4 folder, so that it can be collected at the deadline. * Try to think about the problem before you start writing code. Working the program out in text/html 2010-03-02T06:24:24+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs175-2_sp10_hw5?rev=1267511064 CS 175-02, Homework 5 ---------- * Due Fri, 3/5, 11:59pm * Save all work under your ~/cs175/homework/hw5 folder, so that it can be collected at the deadline. * Try to think about the problem before you start writing code. Working the program out in text/html 2010-03-18T15:44:09+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs175-2_sp10_hw6?rev=1268927049 CS 175-02, Homework 6 ---------- * Due Tue, 3/23, 11:59pm * Save all work under your ~/cs175/homework/hw6 folder, so that it can be collected at the deadline. Assignment Finish the Lab 6 programs. Save your work to ~/cs175/homework/hw6, or you will not get credit for this homework. Complete the lab challenges for extra credit. text/html 2010-03-30T20:24:57+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs175-2_sp10_hw7?rev=1269980697 CS 175-02, Homework 7 ---------- * Due Thurs, 4/1, 11:59pm * Save all work under your ~/cs175/homework/hw7 folder, so that it can be collected at the deadline. Assignment Finish the Lab 7 programs. Save your work to ~/cs175/homework/hw7, or you will not get credit for this homework. Complete the lab challenges for extra credit. text/html 2013-03-04T18:00:54+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs175-2_sp10_hw8?rev=1362420054 CS 175-02, Homework 8 ---------- * Due Thurs, 4/8, 11:59pm * Save all work under your ~/cs175/homework/hw8 folder, so that it can be collected at the deadline. Assignment Continue the Lab 8 program. Save your robot source code (.java file) to ~/cs175/homework/hw8 text/html 2012-09-15T12:21:54+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_1?rev=1347711714 Lab 1 - Intro to UNIX, the Terminal, IceWM, drjava, gedit, javac/java ---------- Preliminaries * Using a MacOS web browser (suggest using Firefox), download and install the following (according to my directions): Topics Your UNIX account * text/html 2010-01-28T17:57:14+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_2?rev=1264701434 CS 175: Lab 2: Basic input/output, understanding integer math ---------- In this lab we cover Java basics including: * Getting user input using a dialog box. * Converting input strings into numeric types. * Integer division pitfalls and workarounds. text/html 2010-02-04T13:59:26+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_3?rev=1265291966 CS 175: Lab 3: Comparisons, Selection ---------- In this lab we cover Java basics including: * Getting user input using a Scanner. * Using if statements to compare ints. ---------- Setup * Create a generic program template to use for this and later programs. text/html 2010-02-23T13:28:09+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_4?rev=1266931689 Lab 4: Selection, Repetition, Counters ---------- In this lab we cover Java and programming basics including: * Selection and decision making with the if selection structure * Looping with the while repetition structure ---------- Setup 1. Save all your work in a subdirectory called text/html 2010-02-25T14:19:46+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_5?rev=1267107586 Lab 5: More Repetition ---------- In this lab we cover Java and programming basics including: * Selection and decision making with the if selection structure * Using sentinel-controlled repetition with a while loop ---------- Setup 1. Save all your work in a subdirectory called text/html 2010-03-25T12:37:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_6?rev=1269520650 CS 175, Lab 6: Simple Methods ---------- In this lab we cover Java and programming basics including: * Writing and using simple methods * Selection with if/else * Loops ---------- Save all your work in a subdirectory called lab6 under your text/html 2010-03-30T20:30:18+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_7?rev=1269981018 CS 175, Lab 7: More Methods ---------- In this lab we cover Java and programming basics including: * Writing and using multiple methods in a program ---------- Save all your work in a subdirectory called lab7 under your cs175/labs directory. Run the following commands to create text/html 2010-04-01T12:59:22+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_8?rev=1270126762 Lab 8: Robocode ---------- Introduction * See <http://robocode.sourceforge.net/> Robocode is a programming game where the goal is to code a robot to compete against other robots in a battle arena. The player is the programmer of the robot, who will have no direct influence on the game. Instead, the player must write the AI of the robot telling it how to behave and react on events occurring in the battle arena. So the name Robocode is a short for "Robot code". Th… text/html 2010-04-08T13:10:05+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_9?rev=1270732205 Lab 9: Arrays ---------- In this lab we cover Java and programming basics including: * Creating and using arrays * Passing arrays as input to methods ---------- Set Up 1. Create a new subdirectory called labs/lab9 under your cs175 directory. At the Terminal, run this command first to create the lab10 subdirectory: text/html 2010-04-17T02:19:09+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_10?rev=1271470749 Lab 10: Arrays Continued ---------- In this lab we cover Java and programming basics including: • Creating and using arrays • Passing arrays as input to methods • Reading lines of input from files ---------- Set up 1. Create the lab10 subdirectory: text/html 2010-04-15T16:36:20+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/cs_175_lab_test_3_robocode?rev=1271349380 Lab Test 3, Robocode Tournament Thurs, 4/22, 9am, HH 546 The robocode tournament, which counts as Lab Test 3 will be next Thursday. The tournament will be held during class. I'm going to allow TEAMS OF TWO to submit one robot for the tournament. This is optional. If you don't want to be in a team, you don't have to be. If you're in a team of two, both of you will get the same grade for Lab Test 3. If you're going to be in a team, LET ME KNOW text/html 2014-10-01T15:24:21+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/data_types_and_input_lab_1?rev=1412177061 Programming Lab Exercise BMI.java The following pseudocode describes how the body mass index can be calculated: - Read mass in pounds - Read height in feet, inches, e.g. 5 feet, 6 inches - Convert height in feet, inches to inches only, e.g. 5 feet, 6 inches = 66 inches - BMI = mass x 703 / (height squared) - Print the BMI text/html 2013-02-07T19:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/double_variables?rev=1360264729 Is the following declaration and assignment valid? double mydouble = 10; <poll Choose one [14]> * Yes * No </poll> text/html 2014-10-21T22:27:05+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/fall_2014_robocode_tournament_1_ideas?rev=1413930425 <== Back to Robocode Tournament page ---------- Robocode Tournament 1 Ideas/Hints ---------- Hint: Don't try to be perfect Your strategy to touch the SittingDucks may not work every time. Sometimes the SittingDucks aren't in the formation you need them to be in. But you have three tries. text/html 2014-10-08T04:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/figureeightbot_using_if?rev=1412742928 FigureEightBot using if ---------- We wrote a FigureEightBot earlier that used a rather crude way of making a figure 8 pattern. ---------- text/html 2014-10-13T14:22:39+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/find_largest_of_five_integers?rev=1413210159 Find largest of five input integers ---------- We worked on an algorithm to find the largest of five numbers. A possible algorithm is shown below: Take one number at a time out of the container. Assume that the first number is the largest. If the second number is greater than the largest, the largest is now the second number. If the third number is greater than the largest, the largest is now the third number. If the fourth number is greater than the largest, the … text/html 2013-04-12T00:46:04+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/for_loop_1?rev=1365727564 DISREGARD: CODE WON'T COMPILE IN JAVA ---------- What is the output of the following code? int i = 0; int j = 0; for ( int i = 1; i <=10; i++ ) { j = j + i; } System.out.print( "The value of i is " + i ); * a - The value of i is 0 * b - The value of i is 10 text/html 2013-04-11T16:39:38+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/for_loop_2?rev=1365698378 How many times does the following for loop repeat? for ( int i = 0; i <= 10; i++ ) { // Just a comment } <multipoll Number of for loop repetitions? [000]> * 9 * 10 * 11 * 12 </multipoll> text/html 2013-04-11T17:16:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/for_loop_3?rev=1365700590 The for loop structure is good for situations when a definite number of repetitions is called for. Which of the following problems would best be solved using a for loop? * a - Get numbers from the keyboard and check if they're odd or even, until the user enters -9999. text/html 2013-04-11T16:54:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/for_loop_4?rev=1365699280 What is output by the following code? for ( int i = 10; i >= 0; i = i - 2 ) { System.out.print( i + " " ); } * a - 10 9 8 7 6 5 4 3 2 1 0 * b - 1 2 3 4 5 6 7 8 9 10 * c - 10 8 6 4 2 0 * d - 10 8 6 4 2 <multipoll Backward for loop output? [000]> text/html 2013-03-25T17:02:27+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/if_else_structure_1?rev=1364230947 See the following code: double distance; double power; if ( distance < 100 ) power = 4.0; else if ( distance < 300 ) power = 3.0; else if ( distance < 500 ) power = 2.0; else power = 1.0; text/html 2013-03-25T17:51:16+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/if_structures_1?rev=1364233876 See the following code: double distance; double power; if ( distance < 100 ) power = 4.0; if ( distance < 300 ) power = 3.0; if ( distance < 500 ) power = 2.0; if ( distance >= 500 ) power = 1.0; text/html 2014-10-14T20:28:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/implementing_classes_lab_1?rev=1413318510 Programming Lab Exercise * Topics: Implementing Classes Counter.java, TestCounter.java In DrJava, define a class called Counter in Counter.java. An object of this class is used to count things, so it records a count that is a non-negative whole number. text/html 2014-10-07T18:18:17+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/implementing_classes_lab_2?rev=1412705897 Programming Lab Exercise BankAccount1.java, TestBankAccount1.java In DrJava, define a class called BankAccount1 in BankAccount1.java. Use the source code at <http://tinyurl.com/l4huluv> as a starting point. An object of this class represents a bank account. Add the following to the text/html 2014-02-26T17:59:37+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/input_and_selection?rev=1393437577 Input and Selection ---------- Topics: * Book Chapters 2 - 3 ---------- Practice programs * Write a program called OddEven.java. In the main() method, use the Java Scanner class to prompt for and input an integer from the keyboard and test whether the input number is odd or even. The program should output either text/html 2013-02-21T18:48:26+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/instance_variables_1?rev=1361472506 See the code below: public class SpiralBot extends Robot { double N = 20; /** * run: SpiralBot's default behavior */ public void run() { double N = 15; // Robot main loop while(true) { // Go forward N pixels ahead(N); // Make right turn turnRight(90); // Increase N by 20 N = N + 20; } } text/html 2013-02-21T17:52:45+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/instance_variables_2?rev=1361469165 See the code below: public class SpiralBot extends Robot { private double N = 20; /** * run: SpiralBot's default behavior */ public void run() { double N = 15; // Robot main loop while(true) { // Go forward N pixels ahead(N); // Make right turn turnRight(90); // Increase N by 20 N = N + 20; } } text/html 2013-02-28T18:36:35+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/instance_variables_3?rev=1362076595 ---------- See the code below (BankAccount class from pp. 86-87 of book): /** A bank account has a balance that can be changed by deposits and withdrawals. */ public class BankAccount { private double balance; /** Constructs a bank account with a zero balance. */ public BankAccount() { balance = 0; } /** Constructs a bank account with a given balance. @param initialBalance the initial balance */ public BankAccount(double initia… text/html 2017-09-05T18:43:03+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/introduction_to_computing_and_programming?rev=1504636983 Introduction to Computing and Programming ---------- Topics: * Book Chapter 1 (read it) * Introduction to UNIX accounts * Login and create a cs175 or cs501a folder for future work. * Introduction to the BlueJ simple IDE. * First Java program text/html 2013-02-07T18:34:24+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/int_variables?rev=1360262064 An int variable can hold __. a. 'x' b. 93 c. 98.3 d. true e. a and b <poll Choose one [3]> * a * b * c * d * e </poll> text/html 2008-04-16T13:41:07+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/java_arrays?rev=1208353267 Arrays in Java * Array: a collection of data storage locations in memory, each of which holds the same type of data. * Each storage location is called an element of the array. Why arrays? * Prior to arrays, we declared and used single variables of different types (int, double, char, etc.) text/html 2014-12-03T21:52:44+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/list_of_cs-175_assignments?rev=1417643564 List of CS-175 Assignments Most solutions will be posted on Piazza, under the Resources page: * CS-175/501a: <https://piazza.com/monmouth/fall2014/cs175501a/resources> * CS-501a-51: <https://piazza.com/monmouth/fall2014/cs501a51/resources> ---------- Assignment 1 - Algorithms, Robocode I Deadline: Fri 9/12, 5pm. 1. Write an algorithm In a plain text file called text/html 2012-01-17T17:48:35+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/list_of_cs-175_labs?rev=1326822515 List of CS-175 Labs ---------- text/html 2013-03-07T18:18:35+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/local_and_parameter_variables_1?rev=1362680315 ---------- See the code below (BankAccount class from pp. 86-87 of book): /** A bank account has a balance that can be changed by deposits and withdrawals. */ public class BankAccount { private double balance; /** Constructs a bank account with a zero balance. */ public BankAccount() { balance = 0; } /** Constructs a bank account with a given balance. @param initialBalance the initial balance */ public BankAccount(double initia… text/html 2013-03-07T18:30:09+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/local_and_parameter_variables_2?rev=1362681009 ---------- See the code below (randbetween() method from MethodBot): /** * randbetween: Return a random integer between low and high values * * @param: low - low value * @param: high - high value * @return: random integer b/w low and high */ public int randbetween( int low, int high ) { // Make sure that low and high values are in correct positions: // If low > high, swap low and high. if ( low > high ) { int temp … text/html 2013-04-01T16:48:45+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/logical_operators_1?rev=1364834925 What will be output by the following code? int x = 2; int y = 3; if ( x >= 2 && y > 3 ) System.out.print( "Condition is true." ); else System.out.print( "Condition is false." ); <multipoll logical ops [000]> * Condition is true. * Condition is false. text/html 2013-04-01T18:04:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/logical_operators_1b?rev=1364839452 Are the two following code blocks functionally the same? // Code block #1: if ( x >= 2 && y > 3 ) System.out.print( "Condition is true." ); else System.out.print( "Condition is false." ); // Code block #2: if ( x >= 2 ) { if ( y > 3 ) System.out.print( "Condition is true." ); } else System.out.print( "Condition is false." ); text/html 2013-04-01T16:54:08+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/logical_operators_2?rev=1364835248 What will be output by the following code? int x = 2; int y = 3; if ( x >= 2 || y > 3 ) System.out.print( "Condition is true." ); else System.out.print( "Condition is false." ); <multipoll logical ops [001]> * Condition is true. * Condition is false. text/html 2013-04-01T16:57:09+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/logical_operators_3?rev=1364835429 What will be output by the following code? double x = 100.5; if ( x > 1 || x < 100 ) System.out.print( "x is between 1 and 100." ); else System.out.print( "x is not between 1 and 100" ); <multipoll logical ops [002]> * x is between 1 and 100. text/html 2014-03-11T12:58:53+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/loops?rev=1394542733 Loops ---------- Topics: * Book Chapter 4 ---------- Practice programs 1 - Largest of inputs * Write a program called LargestOfInput.java. In the main() method, use the java Scanner class to prompt for and input integers from the keyboard repeatedly in a loop. The program should find the largest of the input integers and output the largest integer that has been input to that point. text/html 2015-11-24T19:25:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/loops_lab_-_inches_to_centimeters_conversion_table?rev=1448393130 US2Metric ---------- * Topics: Loops, using the counter variable ---------- Write and save a program US2Metric that prints inches-to-centimeters and pounds-to-kilograms conversion tables, side by side. The table will range from 1-50 inches and pounds. Since we know the number of repetitions that are needed, a text/html 2014-11-20T20:31:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/loops_lab_-_number_guessing_game?rev=1416515490 GuessNumber - a number guessing game ---------- Write a program GuessNumber.java that plays a number guessing game. The program will generate a random integer between 1 and 100, using the randbetween method. Your program will ask the user to guess the value of the number between 1 and 100. text/html 2014-11-19T14:05:53+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/loops_lab_-_oddeven?rev=1416405953 OddEven ---------- * Topics: Decisions, Loops Write and save a program that reads an integer and determines if it's odd or even. An input of zero counts as neither odd nor even. Here are some sample user dialogs from running this program: Enter an integer: 77464 That number is EVEN. Enter an integer: 773 That number is ODD. Enter an integer: 0 That number is neither odd nor even. text/html 2014-12-03T21:14:50+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/loops_lab_-_sum_of_dice?rev=1417641290 SumOfDice - Simulate rolling a pair of dice ---------- Write a program SumOfDice.java that simulates rolling a pair of 6-sided dice 100 times. The randbetween method will be useful here. You will need a loop that repeats 100 times. You will need strings to track the number of dice sums (sum=2 to sum=12). text/html 2015-12-03T21:19:37+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/loops_lab_-_sum_of_odd_integers?rev=1449177577 SumOfOdd - Sum of Odd Integers ---------- * Topics: loops, variable loop limits Write and save a program SumOfOdd.java that will input a positive integer n and then compute and display the sum of the first n positive odd integers. For example, if text/html 2015-12-03T21:17:50+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/loops_lab_-_temperature_conversion_tables?rev=1449177470 TempConvert - Temperature conversion tables ---------- * Topics: Loops, using the counter variable ---------- Write TempConvert.java to output two temperature conversion tables. * The first table that is output will show temperatures in the range 0 - 212 degrees Fahrenheit and the equivalent temperatures in Celsius. text/html 2015-11-24T19:26:34+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/loops_lab_-_ulam_sequence?rev=1448393194 Ulam Sequence Write and save a program Ulam.java. A mathematician named Ulam proposed generating a sequence of numbers from any positive integer n (n > 0) as follows: • If n is 1, stop. • If n is even, the next number is n/2. • If n is odd, the next number is 3*n + 1. • Continue with this process until reaching 1. text/html 2013-02-11T18:39:36+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/methods_1?rev=1360607976 ---------- See the code below: public void onScannedRobot(ScannedRobotEvent e) { // 1 - Get distance to other robot. double distance; distance = e.getDistance(); // Stuff omitted... } <multipoll How many total methods do you see in the above code?> text/html 2013-02-11T18:49:31+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/methods_2?rev=1360608571 ---------- See the code below: public void onScannedRobot(ScannedRobotEvent e) { // 1 - Get distance to other robot. double distance; distance = e.getDistance(); // Stuff omitted... } <multipoll What type of data must be returned by the getDistance() method? [1st]> text/html 2013-02-14T18:14:47+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/methods_3?rev=1360865687 ---------- See the code below: /** * onHitRobot: Move away a bit. */ public void onHitRobot(HitRobotEvent e) { // If he's in front of us, set back up a bit. if (e.getBearing() > -90 && e.getBearing() < 90) { back(100); } // else he's in back of us, so set ahead a bit. else { ahead(100); } } text/html 2014-11-04T21:18:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/methods_lab_-_tryrandom3_using_randbetween_method?rev=1415135892 TryRandom3, using the randbetween method ---------- TryRandom2.java introduced the Math.random() method to generate random integers. We want to write a more convenient way to generate random integers within a certain range. The method we want to write and use is called text/html 2013-02-11T19:03:14+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/method_input_parameters?rev=1360609394 ---------- See the code below: public void onScannedRobot(ScannedRobotEvent e) { // 1 - Get distance to other robot. double distance; distance = e.getDistance(); // Stuff omitted... } Which of the above is a method text/html 2013-02-14T18:29:30+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/method_input_parameters_2?rev=1360866570 See the code below: /** * onHitRobot: Move away a bit. */ public void onHitRobot(HitRobotEvent e) { // If he's in front of us, set back up a bit. if (e.getBearing() > -90 && e.getBearing() < 90) { back(100); } // else he's in back of us, so set ahead a bit. else { ahead(100); } } text/html 2013-03-25T18:17:20+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/multi-level_if_1?rev=1364235440 See the following code: int x = 5; if ( x > 0 ) { if ( x <= 5 ) { System.out.println(x); x = x + 5; } } else { if ( x > 5 ) { System.out.println(x + 5); } } <poll What will be output?> * 0 * 5 * 10 * 5, and then 10 text/html 2013-01-28T08:50:27+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/multipoll_test?rev=1359363027 Answer the following question: <multipoll multipoll test 6> Am I confused? * Yes * No * Maybe </multipoll> <multipoll multipoll test 7> Are you confused? * Yes * No * Are you kidding? </multipoll> text/html 2014-09-04T20:06:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/programming_with_robocode?rev=1409861172 Robocode Introduction * See <http://robocode.sourceforge.net/> * Robocode is a programming game where the goal is to code a robot to compete against other robots in a battle arena. The player is the programmer of the robot, who will have no direct influence on the game. Instead, the player must write the AI of the robot telling it how to behave and react on events occurring in the battle arena. text/html 2013-03-25T18:08:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/relational_operators_1?rev=1364234920 Which of the following is NOT a relational operator? <poll Relational operator?> * > * >= * < * <= * = * != </poll> text/html 2014-09-26T02:39:48+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robocodeadjustfiremethod?rev=1411699188 A Robocode adjustFire Method text/html 2014-09-25T00:18:56+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robocode_lab_-_circlebot1_zigbot1_randomturnbot1?rev=1411604336 CircleBot1, ZigBot1, RandomTurnBot1 ---------- CircleBot1 In Robocode, create CircleBot1 which does the following: * Runs in a circle. * Must use an int instance variable to change direction of circle. Link to source code ZigBot1 In Robocode, create ZigBot1 which does the following: text/html 2014-09-25T00:15:27+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robocode_lab_-_cornerbot1?rev=1411604127 CornerBot1 ---------- Create a robocode robot called CornerBot1 that does the following: * Visit each corner of the battlefield. * The order in which the corners are visited does not matter. * One possible algorithm (discussed in class, 9/16) text/html 2014-10-02T20:22:21+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robocode_lab_-_cornerbot2?rev=1412281341 CornerBot2 ---------- Create a robocode robot called CornerBot2 that does the following: * Visit each corner of the battlefield. * The order in which the corners are visited does not matter. * Another possible algorithm * Turn robot left until heading is an angle that is a multiple of 90º. text/html 2014-11-04T21:21:47+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robocode_lab_-_distanceto_x_y_method?rev=1415136107 Robocode distanceTo Method ---------- We want to write a Robocode method called distanceTo that gives us the distance from our robot to a set of x and y coordinates. The start of distanceTo is as follows: /* * distanceTo: compute and return distance to a set of x,y coordinates * * inputs: double x, double y * output: return double distance from our robot to x, y */ public double distanceTo( double x, double y ) text/html 2014-11-29T22:21:54+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robocode_lab_-_gotocenter_gotocoords_methods?rev=1417299714 More on Methods in Robocode ---------- See a version of the CenterBot from Assignment 4. This version uses Approach #3 to get to the center of the battlefield. * A. In CenterBot4.java, define the public void gotoCenter method, and call it from the Robot main loop to get to the center. Use the text/html 2014-10-03T02:19:54+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robocode_lab_-_methodbot1?rev=1412302794 MethodBot1 ---------- In robocode, create MethodBot1. MethodBot1 should have the following void methods defined from previous robots: * moveDefault: Moves robot in the default (beginner) pattern * moveCircle: Moves robot in a circle * moveFigure8: Moves robot in figure eight pattern text/html 2014-10-14T22:10:17+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robocode_lab_-_nearestwallbot1?rev=1413324617 NearestWallBot1 ---------- 1. Develop a workable algorithm to move a robot to the nearest wall. A robot can know the following data that can be used for this algorithm: * its own x, y coordinates * the height and width of the battlefield, with origin (0,0) in the lower left corner. text/html 2014-12-04T20:56:22+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robocode_tournament_2_sp14?rev=1417726582 ---------- Extra Credit: Second Robocode Tournament Deadline: Fri, 12/12, 5pm The second Robocode tournament will be optional, for extra credit only. It will increase your average lab test grade by up to 15%. I will conduct the tournament outside of class time and post the results. text/html 2009-09-10T19:25:45+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/robots?rev=1252610745 User-agent: * Disallow: / text/html 2014-04-02T18:44:04+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/sample_lab_test_problems?rev=1396464244 These are some more sample lab test problems: ---------- 3. Selection with if: Use if statements in this program. DO NOT use 'else' or 'else if' statements. Write a program called Prob3.java to do the following: a. Declare an int variable called mynumber. b. Input a value for mynumber from the keyboard using Scanner. c. If mynumber is an even number, print "Even". (For this program, assume that 0 is an even number.) d. If mynumber is an odd n… text/html 2014-11-11T21:13:48+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/sample_lab_test_problem_-_loops?rev=1415740428 Redacted text/html 2014-12-23T15:16:10+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/start?rev=1419347770 CS 175 - Intro to Computer Science I CS 501a - Computer Programming Essentials Semester: Fall 2014 ---------- Information / Announcements ---------- Notes * Introduction to Computing and Programming * Beginning Programming with Robocode * Using Objects * Robocode lab - CornerBot1 * Using Objects lab - TryRandom1 (The java.util.Random class) * TryRandom2 - Math.random() method alternative * Implementing Classes text/html 2013-04-01T17:17:04+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/string_basics_1?rev=1364836624 What is the result of the following code? String s = "2"; String t = s + s; * a - t contains 4 * b - t contains “ss” * c - contains “s + s” * d - contains “2 + 2” * e - contains “22” <poll string concatenation [000]> * text/html 2013-04-01T17:19:18+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/string_basics_2?rev=1364836758 What is the result of the following code? int numerator = 2; int denominator = 4; String fraction = numerator + "/" + denominator; * a - fraction contains “1/2” * b - fraction contains “0.5” * c - fraction contains “2/4” * d - fraction contains text/html 2013-04-01T17:37:35+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/string_basics_3?rev=1364837855 What is output by the following code? int numerator = 2; int denominator = 4; System.out.println( numerator + "/" + denominator + " = " + (numerator/denominator) ); * a - numerator / denominator = (numerator/denominator) * b - 2 / 4 = 2/4 * text/html 2012-02-14T18:25:09+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/supplemental_branching_exercises?rev=1329243909 1. Odd or Even Write and save a program OddEven.java that reads an integer and determines if it's odd or even. An input of zero counts as neither odd nor even. Here are some sample user dialogs from running this program: Enter an integer number: 77464 That's number is EVEN. Enter an integer number: 773 That's number is ODD. Enter an integer number: 0 That number is neither odd nor even. text/html 2013-02-07T19:29:50+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/type_casting?rev=1360265390 To assign a double variable d to an int variable x, you write a. x = (long)d b. x = (int)d; c. x = d; d. x = (float)d; <poll Choose one [15]> * a * b * c * d </poll> text/html 2013-02-07T18:34:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/type_memory_usage?rev=1360262052 Which of these data types requires the least amount of memory? a. float b. double c. short d. byte <poll Choose one [2]> * a * b * c * d </poll> text/html 2014-09-25T00:05:53+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/using_objects_lab?rev=1411603553 Using Objects Lab ---------- Do Practice Exercise E2.11 (p. 75) in DrJava: The Random class implements a random number generator, which produces sequences of numbers that appear to be random. To generate random integers, you construct an object of the text/html 2013-02-07T18:37:57+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/variable_assignment?rev=1360262277 To add a to b and store result in b, you write . a. b + a = b; b. a = b + a; c. b = A + B; d. a = a + b; <poll Choose one [10]> * a * b * c * d * none of the above </poll> text/html 2013-02-07T18:27:39+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/variable_declaration?rev=1360261659 Is this a valid variable declaration? int PI = 3.1416; <poll Choose one again> * Yes * No </poll> text/html 2013-04-08T17:17:53+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/while_loop_1?rev=1365441473 About how many times does the following while loop repeat? double balance = 10; double targetBalance = 11; double rate = 10; int years = 1; while ( balance < targetBalance ) { years++; double interest = balance * rate / 100; balance = balance + interest; } text/html 2013-04-08T17:31:15+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/while_loop_2?rev=1365442275 About how many times does the following while loop repeat? double balance = 0; double targetBalance = 10; double rate = 10; int years = 1; while ( balance < targetBalance ) { years++; double interest = balance * rate / 100; balance = balance + interest; } text/html 2013-04-08T17:41:28+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/while_loop_3?rev=1365442888 Exactly how many times does the following while loop repeat? int i = 0; while ( i <= 10 ) { i++; // Increase i by 1 } ---------- <poll Number of repetitions? [003]> * 9 times * 10 times * 11 times * 12 times </poll> text/html 2013-04-08T16:58:07+00:00 Anonymous (anonymous@undisclosed.example.com) http://rockhopper.monmouth.edu/cs/jchung/cs175/while_loop_4?rev=1365440287 What is the final value of the variable counter after the while loop below? int counter = 10; while ( counter > 0 ) { counter--; // Decrease counter by 1 } // Value of counter after while loop is? ---------- <multipoll Counter value? [000]>