a015: 矩陣的翻轉https://zerojudge.tw/ShowProblem?problemid=a015

從對角線對稱翻轉，所以把arr[i][j]填入arr[j][i]即可

Allen(AC)

#include <iostream>
using namespace std;

int main() {

    int arr[100][100];
    int x, y;
    while (cin >> x >> y) {
        for (int i= 0; i < x;i++){
            for (int j= 0; j < y;j++){
                cin >> arr[i][j];
            }
        }
        for (int i= 0; i < y;i++){
            for (int j= 0; j < x;j++){
                cout << arr[j][i] << " ";
            }
            cout << endl;
        }
    }

    return 0;
}