// 逆序第一种方法 public static void main(String[] args) {int arr[] = {11, 22, 33, 44, 55, 66};for (int i = arr.length-1; i >= 0; i--) {System.out.print("\t"+arr[i]);}}

缺点：这个是直接逆转，如果里面是随机数没办法比较

逆序第二种方法public static void main(String[] args){int temp = 0;int arr[] = {11, 22, 33, 44, 55, 66};for (int i = 0; i < arr.length / 2;i++){//重点是看下面三行，temp用来当作临时变量temp = arr[arr.length - 1 - i];  arr[arr.length - 1 - i] = arr[i];arr[i] = temp;}System.out.println("逆转后");for (int i = 0; i < arr.length; i++){System.out.print(arr[i]+"\t");}}

优点：如果是随机的数，可以进行比较，再来逆序。

//逆序第三种public static void main(String[] args){int temp = 0;int arr[] = {11, 22, 33, 44, 55, 66};for (int i = 0; i < arr.length / 2;i++){temp = arr[arr.length - 1 - i];arr[arr.length - 1 - i] = arr[i];arr[i] = temp;}System.out.println("逆转后");for (int i = 0; i < arr.length; i++){System.out.print(arr[i]+"\t");}}