Транспонирование

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        int n = in.nextInt();
        int m = in.nextInt();
        int[][] a = new int[n][m];
        int[][] b = new int[m][n];
        for (int i = 0; i < n; i++)
            for (int j = 0; j < m; j++)
                a[i][j] = in.nextInt();


        for (int i = 0; i < m; i++) {
            for (int j = 0; j < n; j++) {
                b[i][j] = a[j][i];
            }
        }
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < n; j++) {
                System.out.print(b[i][j] + " ");
            }
            System.out.println();
        }
        in.close();
    }
}