// unique algorithm example
#include <iostream> // std::cout
#include <algorithm> // std::unique, std::distance
#include <vector> // std::vector
int main () {
int myints[] = {10,20,20,20,30,30,20,20,10}; // 10 20 20 20 30 30 20 20 10
std::vector<int> myvector (myints,myints+9);
// using default comparison:
std::vector<int>::iterator it;
it = std::unique (myvector.begin(), myvector.end()); // 10 20 30 20 10 ? ? ? ?
// ^
// print out content:
std::cout << "myvector contains:";
for (it=myvector.begin(); it!=myvector.end(); ++it)
std::cout << ' ' << *it;
std::cout << '\n';
std::sort(myvector.begin(), myvector.end()); // 10 10 20 20 30
// print out content:
std::cout << "myvector contains:";
for (it=myvector.begin(); it!=myvector.end(); ++it)
std::cout << ' ' << *it;
std::cout << '\n';
myvector.erase(std::unique(myvector.begin(), myvector.end()), myvector.end());; // 10 20 30
// print out content:
std::cout << "myvector contains:";
for (it=myvector.begin(); it!=myvector.end(); ++it)
std::cout << ' ' << *it;
std::cout << '\n';
return 0;
}