JAVA

package homework; /** * CSC300 Homework 3b: the file name must be PairOfDice * Version 1.0 * * Your Name goes here * You class section goes here * * copy/paste the output in the space below * ------------------------------------------------------ * * * * -------------------------------------------------------- * * This is a skeleton file for your homework. Edit the sections marked TODO. * * You must not change the declaration of any method. * You may not use any other Java classes (e.g. ArrayLists, etc) without permission * of the instructor. * Do not change the main function */ import stdlib.StdOut; import stdlib.StdRandom; /* * The class PairOfDice implements some basic functionality * of a pair of dice. You may not add any methods to this class * other than those indicated below. */ public class PairOfDice { private int die1, die2; public PairOfDice() { // constructor roll(); } public void roll() { // randomize the dice values die1 = StdRandom.uniform(1, 7); // returns a random number from 1 to 6 die2 = StdRandom.uniform(1, 7); } public boolean isDoubles() { // determines if the two die values are the name return die1 == die2; } public int sum() { // the the sum of the two die values return die1 + die2; } // ToDo 1 // add an instance method that determines if the current dice sum is less than 5 or greater than 10 // return true or false // ToDo 2 // add an instance method that determines if the dice values are within 2 of each other // example: 1,2 are within 2 of each other; 2 5 are not within 2 of each other // hint boolean //------------------------------------- testing program --------------------- /* experiment 1 * * Q. how many rolls does it take (on the average) to roll a value less than 5 or greater than 10? * * first write a loop to count the number of rolls needed to roll a 2,3,4,11, or 12 * For example if the rolls were: 5 8 6 5 7 11, it took 6 rolls to get an 11 (this time) * then add code to repeat that test 1,000,000 times. * return: the average (number of rolls needed) of all the tests * hint: nested loops, use the lessThan5GreaterThan10 instance method */ public static double experimentOne( PairOfDice x) { return -1.0; // ToDo 3 fix this } /* * experiment 2 * Question: what is the likelihood of the die values being within 2 of each other? * To answer this, complete this function which * should roll the dice 1,000,000 times and * determine and return the percentage of rolls that are within 2 of each other. * * Hint: you will need to used instance methods of the PairOfDice class */ public static double experimentTwo( PairOfDice x) { return -1; // ToDo 2: fix this } // nothing to do here public static void main(String[] args) { PairOfDice myDice = new PairOfDice(); double rollsToGet2341112 = experimentOne(myDice); double probWithin2 = experimentTwo(myDice); StdOut.format(" The average number of rolls to get a value less than 5 or more than 10 was %5.3f\n", rollsToGet2341112); StdOut.format(" The experimental probablity of the die values being within 2 of each other %5.3f\n", probWithin2); } }