题解 | #矩阵转置#

import java.util.Scanner;
public class Main {
    
    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int[][] arr1 = new int[n][m];
        int[][] arr2 = new int[m][n];
        for(int i = 0 ; i < n ; i++) {
            for(int j = 0 ; j < m ; j++) {
                arr1[i][j] = sc.nextInt();
                arr2[j][i] = arr1[i][j];
            }
        }
        for(int i = 0 ; i < m ; i++) {
            for(int j = 0 ; j < n ; j++) {
                System.out.print(arr2[i][j] + " ");
            }
            System.out.println();
        }
    }
}