class Node {
constructor(value){
this.value = value
this.next = null
}
}
class Queue{
constructor(){
this.first = null;
this.last = null;
this.length = 0;
}
peek(){
return this.first;
}
enqueue(value){
const node = new Node(value);
if(!this.first){
this.first = node;
} else {
this.last.next = node;
//this.first.next = node;
}
this.last = node;
this.length++;
return this;
}
dequeue(){
if(!this.first){
return null;
}
if(this.first == this.last){
this.last = null;
}
this.first = this.first.next;
this.length--;
return this;
}
}
const myQueue = new Queue();
myQueue.enqueue("Ami");
myQueue.enqueue("Tumi");
myQueue.enqueue("Onno keu");
myQueue.dequeue();
//myQueue.peek();
