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_1 ) {
    int [ ] [ ] var_4 = new int [ var_1 . size ( ) ] [ 2 ] ;
    for ( int var_6 = 0 ;
    var_6 < var_1 . size ( ) ;
    var_6 ++ ) {
      var_4 [ var_6 ] [ 0 ] = var_1 . get ( var_6 ) [ 0 ] ;
      var_4 [ var_6 ] [ 1 ] = var_1 . get ( var_6 ) [ 1 ] ;
    }
    return var_4 ;
  }
  