list的部分用法

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#include <iostream>
#include <algorithm>
#include <list>
#include <iterator>
#include <string>
using namespace std;
template<typename type>
void printlist(const type& elem)
{
static int c = 0;
if(c%4 == 0)
  cout << endl;
cout << elem << "/t";
c++;
}
int main(void)
{
list<int> coll_1;
list<int> coll_2;
for(int i = 0; i < 20; ++i)
{
  if(i%2 == 0)
   coll_1.push_back(i);
  else
   coll_2.push_front(i);
}
cout << "coll_1: " ;
for_each(coll_1.begin(), coll_1.end(),
       printlist<int>);
cout << endl;
cout << "coll_2:";
for_each(coll_2.begin(), coll_2.end(),
       printlist<int>);
cout << endl;
coll_1.splice(coll_1.begin(), coll_2);
cout << "coll_1: ";
for_each(coll_1.begin(), coll_1.end(),
       printlist<int>);
cout << endl;
cout << "coll_2:" ;
for_each(coll_2.begin(), coll_2.end(),
       printlist<int>);
cout << endl;
coll_2.assign( find(coll_1.begin(), coll_1.end(), 3),
             coll_1.end() );
coll_1.sort();
cout << "coll_1: ";
for_each(coll_1.begin(), coll_1.end(),
       printlist<int>);
cout << endl;
cout << "coll_2:" ;
for_each(coll_2.begin(), coll_2.end(),
       printlist<int>);
cout << endl;
coll_2.sort();
coll_1.merge(coll_2);
cout << "coll_1: ";
for_each(coll_1.begin(), coll_1.end(),
       printlist<int>);
cout << endl;
cout << "coll_2:" ;
for_each(coll_2.begin(), coll_2.end(),
       printlist<int>);
cout << endl;
coll_1.unique();
cout << "coll_1: ";
for_each(coll_1.begin(), coll_1.end(),
       printlist<int>);
cout << endl;
return 0;
}