c++ set multiset

#include <iostream>
#include <set>

using namespace std;

template<typename Container>
void PrintContents(const Container& con);

template<typename Container>
void PrintContents(const Container& con)
{
  Container::const_iterator iter = con.begin();
  while (iter != con.end())
  {
    cout << *iter << " ";
    ++iter;
  }
  cout << endl;
}

int main()
{
  set<int> set1;
  multiset<int> multiset1;

  set1.insert(10);
  set1.insert(20);
  set1.insert(30);
  set1.insert(20);

  cout << "size:" << set1.size() << endl;
  set<int>::const_iterator set_iter1 = set1.begin();
  while (set_iter1 != set1.end())
  {
    cout << *set_iter1 << " ";
    set_iter1++;
  }
  cout << endl;
  
  multiset1.insert(set1.begin(),set1.end());
  multiset1.insert(50);
  multiset1.insert(50);

  cout << "--------------------------------------------" << endl;
  cout << "multiset size:" << multiset1.size() << " " << multiset1.count(50) << endl;

  multiset<int>::const_iterator multiset_iter1 = multiset1.begin();
  while (multiset_iter1 != multiset1.end())
  {
    cout << *multiset_iter1 << " ";
    multiset_iter1++;
  }
  cout << endl;
  cout << "------------------------------------------- - " << endl;
  
  PrintContents(multiset1);

  cout << "------------------------------------------- - " << endl;
  set<int>::iterator iter_f = set1.find(20);
  if (iter_f != set1.end())
  {
    cout << "find: "<<*iter_f << endl;
  }
  else
  {
    cout << "not find:" << endl;
  }

  multiset1.erase(50);
  PrintContents(multiset1);

  system("pause");
  return 0;
}

=======================================================

size:3
10 20 30
--------------------------------------------
multiset size:5 2
10 20 30 50 50
------------------------------------------- -
10 20 30 50 50
------------------------------------------- -
find: 20
10 20 30
请按任意键继续. . .

 

posted @ 2019-06-10 15:00  西北逍遥  阅读(162)  评论(0编辑  收藏  举报