johnkea

### Keybase proof

I hereby claim:

  * I am johnkea on github.
  * I am johnkea (https://keybase.io/johnkea) on keybase.
  * I have a public key whose fingerprint is 0A6A C87D 362F 5E0A 631C  77EB 8620 9E10 5956 0609

To claim this, I am signing this object:

johnkea

// C++11 solution for http://oj.leetcode.com/problems/evaluate-reverse-polish-notation/

#include <stack>
#include <vector>
#include <string>
#include <algorithm>
#include <functional>

using namespace std;