class LinkedList{
constructor(value){
this.head={
value:value,
next:null
};
this.tail=this.head;
this.length=1;
}
append(value){
const newNode={
value:value,
next:null
}
this.tail.next=newNode;
this.tail=newNode;
this.length++;
return this;
}
prepend(value){
const newNode={
value:value,
next:null
}
newNode.next=this.head;
this.head=newNode;
this.length++;
return this;
}
printList(){
const array=[];
let currentNode=this.head;
while(currentNode!==null){
array.push(currentNode.value);
currentNode=currentNode.next;
}
console.log(array);
}
insert(index,value){
if(index>=this.length){
console.log('yes');
return this.append(value);
}
const newNode={
value:value,
next:null
}
const leader=this.traverseToIndex(index-1);
const holdingPointer=leader.next;
leader.next=newNode;
newNode.next=holdingPointer;
this.length++;
return this.printList();
}
traverseToIndex(index){
let counter=0;
let currentNode=this.head;
while(counter!==index){
currentNode=currentNode.next;
counter++;
}
return currentNode;
}
remove(index){
const leader=this.traverseToIndex(index-1);
const unwantedNode=leader.next;
leader.next=unwantedNode.next;
this.length--;
return this.printList();
}
}
let myLinkedList=new LinkedList(10);
myLinkedList.append(5);
myLinkedList.append(16);
myLinkedList.prepend(1);
myLinkedList.insert(2,99);
myLinkedList.insert(20,88);
myLinkedList.remove(2);
