public int[][] transformImage(int[][] mat, int n) { // write code here int[][] result = new int[n][n]; int[] tmp = new int[n]; for (int i=0;i<n;i++){ for (int j=0;j<n;j++) { tmp[j] = mat[n-j-1][i]; } result[i] = tmp; tmp = new int[n]; } return result; }