C++ set 总结

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set 是什么

set 关键字即值，即只保存关键字的容器 

multiset 关键字可重复出现的 set

自我回答 set 是存储无重复的有序且相同数据类型的容器，是一种关联容器，数据结构

set 与 multiset 区别的代码实现

#include <iostream>
#include <set>
#include <vector>

using namespace std;

int main()
{
	vector<int> ivec;

	for (int i = 0; i != 10; i++)
	{
		ivec.push_back(i);
		ivec.push_back(i);
	}

	set<int> iset(ivec.cbegin(), ivec.cend());

	multiset<int> miset(ivec.cbegin(), ivec.cend());

	cout << "ivec.size() = " << ivec.size() << endl;
	cout << "iset.size() = " << iset.size() << endl;
	cout << "miset.size() = " << miset.size() << endl;

	for (auto iNum : iset)
	{
		cout << iNum << " ";
	}

	cout << endl;

	for (auto iN : miset)
	{
		cout << iN << " ";
	}

	return 0;
}