蓝桥杯【旋转】

import java.util.Scanner;
import java.util.Stack;
// 1:无需package
// 2: 类名必须Main, 不可修改
public class Main {
    private static Stack<Integer>[] stacks;
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int m = scan.nextInt();
        stacks = new Stack[m];
        for (int i = 0; i < m; i++) {
            stacks[i] = new Stack<Integer>();
        }
        for(int i=0;i<n;i++){
            for (int j = 0; j < m; j++) {
                int num = scan.nextInt();
                stacks[j].push(num);
            }
        }
        scan.close();
        for (int i = 0; i <m; i++) {
            for (int j = 0; j < n; j++) {
                System.out.print(stacks[i].peek()+" ");
                stacks[i].pop();
            }
            System.out.println();
        }
    }
}