Question

How to create and use unordered_multiset container for strings in C++

Answer 1

#include <iostream>
#include <unordered_set>
#include <string>

int main()
{
	std::unordered_multiset<std::string> ulist { "c++", "c", "c#" };

	for (const auto& elem : ulist) {
		std::cout << elem << "  ";
	}
	std::cout << std::endl;

	ulist.insert({ "python", "php", "java" });

	for (const auto& elem : ulist) {
		std::cout << elem << "  ";
	}
	std::cout << std::endl;

	return 0;
}

/*
run:

c++  c  c#
c++  c  c#  php  python  java

*/

 

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Answer 2

#include <iostream>
#include <unordered_set>

using namespace std;

int main()
{
	std::unordered_multiset<int> umlist;

	umlist.insert({ 1, 2, 16, 19, 26, 28, 30 });

	for (auto elem : umlist) {
		std::cout << elem << ' ';
	}
	std::cout << std::endl;

	umlist.insert(27);

	for (auto elem : umlist) {
		std::cout << elem << ' ';
	}
	std::cout << std::endl;

	return 0;
}

/*
run:

1 26 2 16 19 28 30
1 26 2 16 27 19 28 30

*/

 

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