java数组反转

//实现数组元素的反转

public class ArrayReverse {
    public static void main(String[] args) {
        reverseOne();
        reverseTwo();
    }

    //第一种方法
    public static void reverseOne() {
        int[] arr = {1,3,5,6,7,8,9,10,13,14}; //随机定义测试数组
        //数组反转
        System.out.println("reverseOne:");
        for (int i = 0; i < arr.length / 2; i++) {
            int temp = arr[i];
            arr[i] = arr[arr.length - i - 1];
            arr[arr.length - i - 1] = temp;
        }
        //遍历输出
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + " ");
        }
        System.out.println();
    }

    //第二种方法
    public static void reverseTwo() {
        int[] arr = {1,3,5,6,7,8,9,10,13,14}; //随机定义测试数组
        
        System.out.println("reverseTwo:");
        for (int i = 0,j =  arr.length - 1;i < j ; i++, j--) {
            int temp = arr[i];
            arr[i] = arr[j];
            arr[j] = temp;
        }
        //遍历输出
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + " ");
        }
    }
}