how to erase element from multiset c++
#include <iostream>
#include <set>
int main()
{
std::multiset<int>ms;
ms.insert(1);
ms.insert(1);
ms.insert(2);
ms.insert(2);
ms.insert(3);
ms.insert(3);
for(auto& it : ms) {
std::cout<<it<<' ';
}
std::cout<<'\n';
ms.erase(2); // erases all elements with value 2
for(auto& it : ms) {
std::cout<<it<<' ';
}
std::cout<<'\n';
ms.erase(ms.begin()); // erases first element
for(auto& it : ms) {
std::cout<<it<<' ';
}
std::cout<<'\n';
ms.erase(ms.find(3)); // erases only one element with value 3
for(auto& it : ms) {
std::cout<<it<<' ';
}
return 0;
}