diff --git a/Array.java b/Array.java new file mode 100644 index 0000000..5735b6f --- /dev/null +++ b/Array.java @@ -0,0 +1,58 @@ +//Java/JavaTutorials/Array.java +//Matthew Ellison +// Created: 02-28-19 +//Modified: 02-28-19 +//This file contains some practice using different kinds of arrays in java + +import java.util.Random; +import java.util.Arrays; +import java.util.ArrayList; + + +public class Array{ + private static final int NUMS_TO_ROLL = 10000; + private static final int HIGHEST_NUM = 6; + public static void main(String[] argv){ + Random generator = new Random(); + //Roll some random numbers and store the results in an array + +// int[] numsAry = {0, 0, 0, 0, 0, 0}; + int[] numsAry = new int[HIGHEST_NUM + 1]; + Arrays.fill(numsAry, 0); +/* + for(int cnt = 0;cnt < HIGHEST_NUM;++cnt){ + numsAry[cnt] = 0; + } +*/ + System.out.println("Rolling numbers for the regular array..."); + for(int cnt = 0;cnt < NUMS_TO_ROLL;++cnt){ + ++numsAry[generator.nextInt(HIGHEST_NUM)]; + } + //Print the results + System.out.println("Results:"); + for(int numRolled = 0;numRolled < HIGHEST_NUM;++numRolled){ + System.out.printf("%d. %d\n", numRolled + 1, numsAry[numRolled]); + } + + + //Roll some random numbers and store the results in a dynamic array + System.out.println("\n\nRolling numbers for the dynamic array..."); + ArrayList numsList = new ArrayList(); + for(int cnt = 0;cnt <= HIGHEST_NUM;++cnt){ + numsList.add(0); + } + for(int cnt = 0;cnt < NUMS_TO_ROLL;++cnt){ + int num = generator.nextInt(HIGHEST_NUM); + numsList.set(num, numsList.get(num) + 1); + } + //Print the results + for(int numRolled = 0;numRolled < HIGHEST_NUM;++numRolled){ + System.out.printf("%d. %d\n", numRolled + 1, numsList.get(numRolled)); + } + System.out.println("Test completed"); + } +} + +/* Results: + +*/