//myListswap1.cpp
#include <iostream>
#include <list>
#include <string>
using namespace std; 
//list swap function
 int main()
 {
 string str1[] = {"A", "C", "B","D"};
 string str2[] = {"E",  "F","G","H"};
// 
 list <string> Lstr1(str1, str1+4);
 list <string> Lstr2(str2, str2+4);
//
 cout<<"\n Lstr1.size() : " << Lstr1.size() <<endl; 
 list<string>:: iterator it;
 cout<<"\n Lstr1 Origninal string \n"; 

 for(it= Lstr1.begin(); it !=Lstr1.end(); it++)
  {
 	 cout <<" "<< *it;
 }
cout<<"\n---Lstr2 Orginal string \n"; 
 for(it= Lstr2.begin(); it !=Lstr2.end(); it++)
  {
 	 cout <<" "<< *it;
 }
 Lstr2.swap(Lstr1); 
 // copy Lstr1 to Lstr2 after swap
 cout<<"\n----Lstr1 after swap-------\n"; 
  for(it= Lstr1.begin(); it !=Lstr1.end(); it++)
  {
 	 cout <<" "<< *it;
 }
 cout<<"\n---Lstr2 after swap------- \n"; 
 for(it= Lstr2.begin(); it !=Lstr2.end(); it++)
  {
 	 cout <<" "<< *it;
 }
return 0;
}