comefrom: <qiyuangong>867_Transpose_Matrix_1.java
code: public int[][] transpose(int[][] A) {
          int R = A.length, C = A[0].length;
          int[][] ans = new int[C][R];
          for (int r = 0; r < R; ++r)
              for (int c = 0; c < C; ++c) {
                  ans[c][r] = A[r][c];
              }
          return ans;
      }
masked: public int [ ] [ ] sample_funcname ( int [ ] [ ] var_0 ) {
    int var_2 = var_0 . length , var_4 = var_0 [ 0 ] . length ;
    int [ ] [ ] var_5 = new int [ var_4 ] [ var_2 ] ;
    for ( int var_6 = 0 ;
    var_6 < var_2 ;
    ++ var_6 ) for ( int var_7 = 0 ;
    var_7 < var_4 ;
    ++ var_7 ) {
      var_5 [ var_7 ] [ var_6 ] = var_0 [ var_6 ] [ var_7 ] ;
    }
    return var_5 ;
  }
  