#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
int main()
{
  // Sort an integer array  
  int a[] = {20, 7, 5, 10, 18};
  std::vector <int> vec (a, a + sizeof(a)/sizeof(int));
  std::sort(vec.begin(), vec.end()); // vec [5](5,7,10,18,20)

  // Sort strings  
  std::vector <std::string> strs;
  strs.push_back("hello");
  strs.push_back("std::string");
  strs.push_back("Hello");
  strs.push_back("std::sort");
  std::sort(strs.begin(), strs.end());
  // [4]("Hello","hello","std::sort","std::string")
  
  return 0;
}