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queue.js
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queue.js
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class Node {
constructor(value) {
this.value = value;
this.next = null;
}
}
class Queue {
constructor() {
this.first = null;
this.last = null;
this.length = 0;
}
peek() {}
enqueue(value) {
const newNode = new Node(value);
if (this.length === 0) {
this.first = newNode;
this.last = newNode;
} else {
this.last.next = newNode;
this.last = newNode;
}
this.length++;
}
dequeue() {
if (!this.first) return null;
const holdingPointer = this.first.next;
if (this.first === this.last) this.last = null;
this.first = holdingPointer;
this.length--;
}
}
const myQueue = new Queue();
myQueue.enqueue("Joy");
myQueue.enqueue("Saad");
myQueue.dequeue();
myQueue.dequeue();
console.log(myQueue);