C++ List splice()

C++ List splice function transfers the elements from list y into a list container at a specified position and this leads to the altering the sizes of both the list.

Syntax

void splice(iterator pos, list& y); 
void splice(iterator pos, list& y, iterator pos1);
void splice(iterator pos, list& y, iterator first, iterator last);

Parameter

y: It is a list object of same type from which the content is to be transferred.

pos: It defines the position where the elements of y are inserted.

pos1: The element pointed by the pos1 is to be transferred.

(first,last): It defines the range of the elements which are to be transferred.

Return value

It does not return any value.

Example 1

Let's see a simple example

#include <iostream>
#include<list>
using namespace std;
int main()
{
  
  list<int> li={1,2,3,4};
  list<int> li1={5,6,7,8};
  list<int>::iterator itr=li.begin();
  li.splice(itr,li1);
  for(list<int>::iterator itr=li.begin();itr!=li.end();++itr)
  std::cout << *itr <<" ";
  return 0;
}

Output:

5 6 7 8 1 2 3 4

Example 2

Let's see a simple example

#include <iostream>
#include<list>
using namespace std;
int main()
{
  list<int> li={9,11,12,13};
  list<int> li1={10,6,7,8};
  list<int>::iterator itr=li.begin();
 list<int>::iterator itr1=li1.begin();
  ++itr;
  li.splice(itr,li1,itr1);
  for(list<int>::iterator itr=li.begin();itr!=li.end();++itr)
  std::cout << *itr <<" ";
  return 0;}

Output:

9 10 11 12 13

Example 3

Let's see a simple example

#include <iostream>
#include<list>
using namespace std;
int main()
{
  list<string> li={"programming language"};
  list<string> li1={"java","is","a","language"};
  list<string>::iterator itr=li.begin();
  list<string>::iterator itr1=li1.begin();
  advance(itr1,3);
  li.splice(itr,li1,li1.begin(),itr1);
  for(list<string>::iterator itr=li.begin();itr!=li.end();++itr)
  std::cout << *itr <<" ";
  return 0;
}

Output: