Create add remove element from linkedlist.cpp

add remove element from linkedlist.cpp

@@ -0,0 +1,99 @@
+#include<iostream>
+using namespace std;
+
+class Node{
+    public:
+    int val;
+    Node *next;
+     Node(int val){
+        this->val=val;
+        this->next=nullptr;
+    }
+};
+
+class customLinkedList{
+    public:
+    Node *head,*tail;
+    int size=0;
+    customLinkedList(){
+        size=0;
+        head=nullptr;
+        tail=nullptr;
+    }
+
+void addLast(int val){
+    Node *node= new Node(val);
+        if(size==0)
+        {
+        size++;
+        head=node;
+        tail=node;
+         return;
+        }
+    tail->next=node;
+    tail=node;
+    size++;
+}
+void addFirst(int val){
+    Node *node= new Node(val);
+    if(size==0)
+    {
+        addLast(val);
+        return;
+    }
+    node->next=head;
+    head=node;
+    size++;
+}
+void removeFirst(){
+    if(size==0){
+        cout<<"LinkedList is empty"<<endl;
+        return;
+    }
+    if(size==1){
+        size--;
+        head=nullptr;
+        tail=nullptr;
+        return;
+    }
+    size--;
+    head=head->next;
+}
+void removeLast(){
+    if(size==0){
+        removeFirst();
+        return;
+    }
+    size--;
+    Node *p=head;
+    while(p->next!=tail){
+        p=p->next;
+    }
+    p->next=nullptr;
+    tail=p;
+}
+void display(){
+    Node *p=head;
+    while(p!=nullptr){
+        cout<<p->val<<" ";
+        p=p->next;
+    }
+    cout<<endl;
+}
+};
+
+int main(){
+    customLinkedList *c1=new customLinkedList();
+    c1->addLast(10);
+    c1->addLast(20);
+    c1->addLast(30);
+    c1->addFirst(40);
+    c1->addFirst(40);
+    c1->display();
+    c1->removeFirst();
+    c1->removeFirst();
+    c1->display();
+    c1->removeLast();
+    c1->display();
+    return 0;
+}