实现二维数组反转

/*[[1,2.3][4,5,6]] -> [[3,2,1], [6,5,4]]
* 数组的反转(reversal)
* */

java代码

public class TestArrayRes {
    public static void main(String[] args) {
        int[][] arr = {{1,2,3},{4,5,6}};
        int [][] newarr = arrayrecerive(arr);
        for(int i = 0; i<newarr.length; i++){
            for(int j = 0; j<newarr[i].length; j++){
                System.out.println(newarr[i][j]);
            }
        }
    }
    public static int[][] arrayrecerive(int[][] arr){
        if (arr.length==0){
            return arr;
        }
        for(int i = 0; i<arr.length; i++){
            int left = 0;
            int right = arr[i].length - 1;
            if (right <= 0){
                continue;
            }
            while (left < right){
                int temp = arr[i][left];
                arr[i][left] = arr[i][right];
                arr[i][right] = temp;
                left++;
                right--;
            }

        }
        return arr;
    }
}

python代码

#coding:utf-8

array_number = [[1,2,3],[4,5,6]]


for i in range(len(array_number)):
    left = 0
    right = len(array_number[i]) - 1
    while left < right:
        temp = array_number[i][left]
        array_number[i][left] = array_number[i][right]
        array_number[i][right] = temp
        left+=1
        right-=1

print(array_number)