Javascript 中的队列类
下面是 Queue 类的完整实现 −
示例
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 = []; } }
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