how to make a list in c++
#include <list>
std::list<int> ints;how to make a list in c++
#include <list>
std::list<int> ints;list in cpp
//code by Soumyadeep Ghosh
//ig: @soumyadepp
#include <bits/stdc++.h>
using namespace std;
void display_list(list<int>li)
{
//auto variable to iterate through the list
for(auto i:li)
{
cout<<i<<" ";
}
}
int main()
{
//definition
list<int>list_1;
int n,x;
cin>>n;
//taking input and inserting using insert function
for(int i=0;i<n;i++)
{
cin>>x;
list_1.insert(x);
}
//if list is not empty display it
if(list_1.empty()==false)
{
display_list(list_1);
}
list_1.sort(); //sorts the list
list_1.reverse(); //reverses the list
list_1.pop_back(); //deletes last element of the list
list_1.pop_front(); //deletes the first element of the list
display_list(list_1); //function to display the list
return 0;
}
//in addition , you can use nested lists such as list<list<int>> or list<vector<list>> etclinked list in c++ stl
#include <bits/stdc++.h>
#include <iostream>
#include <list>
#include <iterator>
#define ll long long
using namespace std;
//function to print all the elements of the linked list
void showList(list <int> l){
list <int> :: iterator it; //create an iterator according to the data structure
for(it = l.begin(); it != l.end(); it++){
cout<<*it<<" ";
}
}
int main(){
list <int> l1;
list <int> l2;
for(int i=0; i<10; i++){
l1.push_back(i*2); //fill list 1 with multiples of 2
l2.push_back(i*3); //fill list 2 with multiples of 3
}
cout<<"content of list 1 is "<<endl;
showList(l1);
cout<<endl;
cout<<"content of list 2 is "<<endl;
showList(l2);
cout<<endl;
//reverse the first list
l1.reverse();
showList(l1);
cout<<endl;
//sort the first list
l1.sort();
showList(l1);
cout<<endl;
//removing an element from both sides
l2.pop_front();
l2.pop_back();
//adding an element from both sides
l2.push_back(10);
l2.push_front(20);
return 0;
}list in c++
#include <bits/stdc++.h>
using namespace std;
void display(list<int> &lst){
list<int> :: iterator it;
for(it = lst.begin(); it != lst.end(); it++){
cout<<*it<<" ";
}
}
int main(){
list<int> list1;
int data, size;
cout<<"Enter the list Size ";
cin>>size;
for(int i = 0; i<size; i++){
cout<<"Enter the element of the list ";
cin>>data;
list1.push_back(data);
}
cout<<endl;
display(list1);
return 0;
}list stl
template < class T, class Alloc = allocator<T> > class list;Copyright © 2021 Codeinu
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