comefrom: <awangdev>1. Two Sum_2.java
code: public int[] twoSum(int[] numbers, int target) {
          if (numbers == null || numbers.length == 0) {
              return null;
          }
          int[] original = new int[numbers.length];
          for (int i = 0; i < numbers.length; i++) {
              original[i] = numbers[i];
          }
          
          Arrays.sort(numbers);
          int start = 0; 
          int end = numbers.length - 1;
          int num1 = -1;
          int num2 = -1;
          while (start != end) {
              int sum = numbers[start] + numbers[end];
              if (sum == target) {
                  num1 = numbers[start];
                  num2 = numbers[end];
                  break;
              }else if (sum < target) {
                  start++;
              } else {
                  end--;
              }
          }
  
          int[] rst = new int[2];
          rst[0] = -1;
          rst[1] = -1;
          for (int i = 0; i < original.length; i++) {
              if (original[i] == num1 || original[i] == num2) {
                  if (rst[0] == -1) {
                      rst[0] = i + 1;
                  } else {
                      rst[1] = i + 1;
                      break;
                  }
              }
          }
          return rst;
      }
masked: public int [ ] sample_funcname ( int [ ] var_0 , int var_1 ) {
    if ( var_0 == null || var_0 . length == 0 ) {
      return null ;
    }
    int [ ] var_5 = new int [ var_0 . length ] ;
    for ( int var_6 = 0 ;
    var_6 < var_0 . length ;
    var_6 ++ ) {
      var_5 [ var_6 ] = var_0 [ var_6 ] ;
    }
    Arrays . sort ( var_0 ) ;
    int var_9 = 0 ;
    int var_11 = var_0 . length - 1 ;
    int var_12 = - 1 ;
    int var_13 = - 1 ;
    while ( var_9 != var_11 ) {
      int var_14 = var_0 [ var_9 ] + var_0 [ var_11 ] ;
      if ( var_14 == var_1 ) {
        var_12 = var_0 [ var_9 ] ;
        var_13 = var_0 [ var_11 ] ;
        break ;
      }
      else if ( var_14 < var_1 ) {
        var_9 ++ ;
      }
      else {
        var_11 -- ;
      }
    }
    int [ ] var_16 = new int [ 2 ] ;
    var_16 [ 0 ] = - 1 ;
    var_16 [ 1 ] = - 1 ;
    for ( int var_6 = 0 ;
    var_6 < var_5 . length ;
    var_6 ++ ) {
      if ( var_5 [ var_6 ] == var_12 || var_5 [ var_6 ] == var_13 ) {
        if ( var_16 [ 0 ] == - 1 ) {
          var_16 [ 0 ] = var_6 + 1 ;
        }
        else {
          var_16 [ 1 ] = var_6 + 1 ;
          break ;
        }
      }
    }
    return var_16 ;
  }
  