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#include "leetcode.h"

class Solution {
public:
  string reverseWords(string s) {
    int i = 0;
    for (int j = 0; j < s.size(); ++j) {
      if (s[j] == ' ') {
        reverse(s.begin() + i, s.begin() + j);
        i = j + 1;
      }
    }
    reverse(s.begin() + i, s.end());
    return s;
  }
};

int main() {
  Solution obj;
  cout << obj.reverseWords("Let's take LeetCode contest");
}