代码

public class ReverseArray {public static void main(String[] args) {String[] str = {"AA", "BB", "CC", "DD"};System.out.println(Arrays.toString(str));reverse1(str);System.out.println(Arrays.toString(str));reverse2(str);System.out.println(Arrays.toString(str));reverse3(str);System.out.println(Arrays.toString(str));}//    方式1public static void reverse1(String[] str) {int j = 0;for (int i = str.length - 1; i > 0; i--) {str[j++] = str[i];}}//    方式2public static void reverse2(String[] str) {
//        i:交换次数for (int i = 0; i < str.length / 2; i++) {String temp = str[i];
//            和对应的位置进行交换str[i] = str[str.length - i - 1];str[str.length - i - 1] = temp;}}//    方式3public static void reverse3(String[] str) {for (int i = 0,j=str.length-1; i <j; i++,j--) {String temp=str[i];str[i]=str[j];str[j]=temp;}}
}