comefrom: <awangdev>416. Partition Equal Subset Sum_3.java
code: public boolean dfs(int[] nums, int index, int target) {
          if (index == nums.length) return false;
          if (target == nums[index]) return true;
          if (target < nums[index]) return false;
          return dfs(nums, index + 1, target - nums[index]) 
              || dfs(nums, index + 1, target);
      }
masked: public boolean sample_funcname ( int [ ] nums , int index , int target ) {
    if ( index == nums . length ) return false ;
    if ( target == nums [ index ] ) return true ;
    if ( target < nums [ index ] ) return false ;
    return dfs ( nums , index + 1 , target - nums [ index ] ) || dfs ( nums , index + 1 , target ) ;
  }
  