comefrom: <awangdev>Longest Valid Parentheses_1.java
code: private int addPriorLength(int priorIndex, int[] dp) {
  
          return (priorIndex - 1 >= 0) ? dp[priorIndex - 1] : 0;
      }
masked: private int sample_funcname ( int var_0 , int [ ] var_1 ) {
    return ( var_0 - 1 >= 0 ) ? var_1 [ var_0 - 1 ] : 0 ;
  }
  