/* The following code example is taken from the book
* "The C++ Standard Library - A Tutorial and Reference"
* by Nicolai M. Josuttis, Addison-Wesley, 1999
*
* (C) Copyright Nicolai M. Josuttis 1999.
* Permission to copy, use, modify, sell and distribute this software
* is granted provided this copyright notice appears in all copies.
* This software is provided "as is" without express or implied
* warranty, and with no claim as to its suitability for any purpose.
*/
#include <iostream>
#include <set>
#include <algorithm>
#include <iterator>
using namespace std;
int main()
{
/* type of the collection:
* - duplicates allowed
* - elements are integral values
* - descending order
*/
typedef multiset<int,greater<int> > IntSet;
IntSet coll1; // empty multiset container
// insert elements in random order
coll1.insert(4);
coll1.insert(3);
coll1.insert(5);
coll1.insert(1);
coll1.insert(6);
coll1.insert(2);
coll1.insert(5);
// iterate over all elements and print them
IntSet::iterator pos;
for (pos = coll1.begin(); pos != coll1.end(); ++pos) {
cout << *pos << ' ';
}
cout << endl;
// assign elements to another multiset with ascending order
multiset<int> coll2(coll1.begin(),
coll1.end());
// remove all elements with value 5
int num;
num = coll2.erase (5);
cout << num << " element(s) removed" << endl;
// print all elements of the copy
copy (coll2.begin(), coll2.end(),
ostream_iterator<int>(cout," "));
cout << endl;
}
/*
6 5 5 4 3 2 1
2 element(s) removed
1 2 3 4 6
*/
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