一个二维数组的小例子
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**功能要求：讲控制台输入的横排文章（字符串）转成竖排文章（古书式）***
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package day07;import java.util.Arrays;import java.util.Random;public class SortTest { public static void main(String[] args) { //int[] ary = {2,3,4,1,5,1,7}; int[] ary = createArray(10000); long start = System.currentTimeMillis(); Arrays.sort(ary); long end = System.currentTimeMillis(); System.out.println("sort:"+(end-start)); //插入排除 ary = createArray(10000); start = System.currentTimeMillis(); SortDemo.insertSort(ary); end = System.currentTimeMillis(); System.out.println("insert:"+(end-start)); } public static int[] createArray(int n){ int[] ary = new int[n]; Random r = new Random(); for(int i=0; i<ary.length; i++){ ary[i] = r.nextInt(); } return ary; }}???