#include <list>

#include <iostream>

#include <stdlib.h>

#include <time.h>

using namespace std;



void main()

{

	list<int> l1;

	list<int> l2(10,5);	// construct l2 as list of 10 copies of 5



	srand(time(0));	// seed pseudo-random number generator

	for (int i = 0; i < 10; i++)	// fill l1 with 10 random numbers < 10

	{	l1.push_back(rand()%10);	}



	l1.sort();	// sort using operator <, i.e. in ascending order



	l1.merge(l2);	// merge the elements in l1 and l2, insert them into l1 and remove them from l2.



	cout << "Contents of merged list :" << endl;

	for (list<int>::iterator l_iter = l1.begin(); l_iter != l1.end(); l_iter++)

	{	cout << *l_iter << " ";	}

	cout << endl;



	l1.reverse();	// reverse contents of l1

	l1.remove(5);	// remove all elements equal to 5

	l1.unique();	// remove all but one element from each group of identical elements



	cout << "Contents of reversed and purged list: " << endl;

	while (!l1.empty())

	{	cout << l1.front() << " ";

		l1.pop_front();	// remove first element

	}

	cout << endl;

}