comefrom: <awangdev>57. Insert Interval_3.java
code: private int[][] convert(List<int[]> list) {
  
          int[][] rst = new int[list.size()][2];
          for (int i = 0; i < list.size(); i++) {
              rst[i][0] = list.get(i)[0];
              rst[i][1] = list.get(i)[1];
          }
          return rst;
      }
masked: private int [ ] [ ] sample_funcname ( List < int [ ] > var_0 ) {
    int [ ] [ ] var_1 = new int [ var_0 . size ( ) ] [ 2 ] ;
    for ( int var_2 = 0 ;
    var_2 < var_0 . size ( ) ;
    var_2 ++ ) {
      var_1 [ var_2 ] [ 0 ] = var_0 . get ( var_2 ) [ 0 ] ;
      var_1 [ var_2 ] [ 1 ] = var_0 . get ( var_2 ) [ 1 ] ;
    }
    return var_1 ;
  }
  