题解 | #二维数组打印#

解题思路：两层循环，外层循环控制次数，内层循环负责向数组中写入数据

import java.util.*;

public class Printer {
    public int[] arrayPrint(int[][] arr, int n) {
        // write code here
        int[] res = new int[n * n];
        int index = 0;
        for (int j = n - 1; j >= 0; j--) {
            for (int i = 0; i < n - j; i++) {
                res[index] = arr[i][j + i];
                res[n * n - 1 - index] = arr[n - 1 - i][n - 1 - j - i];
                index++;
            }
        }
        return res;
    }
}