#include "sum_reverse_sort.h"
#include <algorithm>
int Sum(int x, int y) {
    return x + y;
}

string Reverse(string s) {
    string ret = "";
    for (int i = s.length() - 1, i > -1, i--) {
        ret += s[i];
    }
    return ret;
}

void Sort(vector<int>& nums) {
    std::sort(nums.begin(), nums.end());
}