/** * [Queue] * @param {[Int]} size [队列大小] */ function Queue(size) { var list = []; //向队列中添加数据 this.push = function(data) { if (data==null) { return false; } //如果传递了size参数就设置了队列的大小 if (size != null && !isNaN(size)) { if (list.length == size) { this.pop(); } } list.unshift(data); return true; } //从队列中取出数据 this.pop = function() { return list.pop(); } //返回队列的大小 this.size = function() { return list.length; } //返回队列的内容 this.quere = function() { return list; } } //初始化没有参数的队列 var queue = new Queue(); for (var i = 1; i <= 5; i++) { queue.push(i); } console.log(queue.quere()); console.log(queue.pop()); //从队列中取出一个 console.log(queue.quere()); var queue = new Queue(3); for (var i = 1; i <= 5; i++) { queue.push(i); } console.log(queue.quere()); console.log(queue.pop()); console.log(queue.quere());
结果:
[ 5, 4, 3, 2, 1 ] 1 [ 5, 4, 3, 2 ][ 5, 4, 3 ] 3 [ 5, 4 ]