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