题解 | 数组倒转

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int[] arr = new int[6];
        Scanner scanner = new Scanner(System.in);
        for (int i = 0; i < arr.length; i++) {
            arr[i] = scanner.nextInt();
        }
        System.out.println(Arrays.toString(arr));

        //write your code here......

        int left = 0;
        int right = arr.length - 1;

        for(; left < right;){
            arr[left] = arr[left] + arr[right];
            arr[right] = arr[left] - arr[right];
            arr[left] = arr[left] - arr[right];
            left ++;
            right --;
        }

        System.out.println(Arrays.toString(arr));
    }
}