数组排序

package com.wlf.array;import java.util.Arrays;import java.util.Comparator;public class ArraySort {public static void main(String[] args) {Integer[] intArr = new Integer[] { 23, 34, 4, 57, 12 };// 对数组排序由小到大Arrays.sort(intArr);// 对数组排序由大到小Arrays.sort(intArr, new Comparator() {public int compare(Integer o1, Integer o2) {if (o1.intValue() > o2.intValue()) {return -1;}if (o1.intValue() < o2.intValue()) {return 1;} else {return 0;}}});}}