class Queue {
constructor() {
this.items = [];
}
enqueue(element) {
return this.items.push(element);
}
dequeue() {
if (this.items.length > 0) {
return this.items.shift();
}
}
size() {
return this.items.length;
}
peek() {
return this.items[this.items.length - 1];
}
isEmpty() {
return this.items.length == 0;
}
print() {
for (let i = 0; i < this.items.length; i++) {
console.log(this.items[i]);
}
}
delete(){
this.items = [];
}
}
let queue = new Queue();
queue.enqueue(2);
queue.enqueue(7);
queue.enqueue(3);
queue.enqueue(9);
queue.enqueue(0);
queue.enqueue(8);
console.log(queue.items);
queue.dequeue();
console.log(queue.items);
console.log(queue.peek());
console.log(queue.isEmpty());
console.log("size: " + queue.size());
queue.dequeue();
queue.print();
queue.delete();
console.log(queue.items);
/*
run:
[2, 7, 3, 9, 0, 8]
[7, 3, 9, 0, 8]
8
false
"size: 5"
3
9
0
8
[]
*/
