Đây là quá trình triển khai hoàn chỉnh của lớp Hàng đợi -
Ví dụ
class Queue {
constructor(maxSize) {
// Set default max size if not provided
if (isNaN(maxSize)) {
maxSize = 10;
}
this.maxSize = maxSize;
// Init an array that'll contain the queue values.
this.container = [];
}
// Helper function to display all values while developing
display() {
console.log(this.container);
}
// Checks if queue is empty
isEmpty() {
return this.container.length === 0;
}
// checks if queue is full
isFull() {
return this.container.length >= this.maxSize;
}
enqueue(element) {
// Check if Queue is full
if (this.isFull()) {
console.log("Queue Overflow!"); return;
}
// Since we want to add elements to end, we'll just push them.
this.container.push(element);
}
dequeue() {
// Check if empty
if (this.isEmpty()) {
console.log("Queue Underflow!");
return;
}
return this.container.shift();
}
peek() {
if (this.isEmpty()) {
console.log("Queue Underflow!");
return;
}
return this.container[0];
}
clear() {
this.container = [];
}
}