comefrom: <awangdev>7. Reverse Integer_1.java
code: public int reverse(int x) {
          int result = 0;
  
          while (x != 0) {
              int tail = x % 10;
              int newResult = result * 10 + tail;
              if ((newResult - tail) / 10 != result) return 0; 
              result = newResult;
              x = x / 10;
          }
  
          return result;
      }
masked: public int sample_funcname ( int var_0 ) {
    int var_1 = 0 ;
    while ( var_0 != 0 ) {
      int var_2 = var_0 % 10 ;
      int var_3 = var_1 * 10 + var_2 ;
      if ( ( var_3 - var_2 ) / 10 != var_1 ) return 0 ;
      var_1 = var_3 ;
      var_0 = var_0 / 10 ;
    }
    return var_1 ;
  }
  