3.9 KiB
3.9 KiB
id | title | challengeType | videoUrl | localeTitle |
---|---|---|---|---|
587d8250367417b2b2512c60 | Create a Queue Class | 1 | 创建队列类 |
Description
Instructions
Tests
tests:
- text: 您的<code>Queue</code>类应该有一个<code>enqueue</code>方法。
testString: 'assert((function(){var test = new Queue(); return (typeof test.enqueue === "function")}()), "Your <code>Queue</code> class should have a <code>enqueue</code> method.");'
- text: 您的<code>Queue</code>类应该有一个<code>dequeue</code>方法。
testString: 'assert((function(){var test = new Queue(); return (typeof test.dequeue === "function")}()), "Your <code>Queue</code> class should have a <code>dequeue</code> method.");'
- text: 您的<code>Queue</code>类应该有一个<code>front</code>方法。
testString: 'assert((function(){var test = new Queue(); return (typeof test.front === "function")}()), "Your <code>Queue</code> class should have a <code>front</code> method.");'
- text: 您的<code>Queue</code>类应该有一个<code>size</code>方法。
testString: 'assert((function(){var test = new Queue(); return (typeof test.size === "function")}()), "Your <code>Queue</code> class should have a <code>size</code> method.");'
- text: 您的<code>Queue</code>类应该有一个<code>isEmpty</code>方法。
testString: 'assert((function(){var test = new Queue(); return (typeof test.isEmpty === "function")}()), "Your <code>Queue</code> class should have an <code>isEmpty</code> method.");'
- text: <code>dequeue</code>方法应该删除并返回队列的前端元素
testString: 'assert((function(){var test = new Queue(); test.enqueue("Smith"); return (test.dequeue() === "Smith")}()), "The <code>dequeue</code> method should remove and return the front element of the queue");'
- text: <code>front</code>方法应该返回队列的front元素的值
testString: 'assert((function(){var test = new Queue(); test.enqueue("Smith"); test.enqueue("John"); return (test.front() === "Smith")}()), "The <code>front</code> method should return value of the front element of the queue");'
- text: <code>size</code>方法应该返回队列的长度
testString: 'assert((function(){var test = new Queue(); test.enqueue("Smith"); return (test.size() === 1)}()), "The <code>size</code> method should return the length of the queue");'
- text: 如果队列中有元素,则<code>isEmpty</code>方法应返回<code>false</code>
testString: 'assert((function(){var test = new Queue(); test.enqueue("Smith"); return !(test.isEmpty())}()), "The <code>isEmpty</code> method should return <code>false</code> if there are elements in the queue");'
Challenge Seed
function Queue () {
var collection = [];
this.print = function() {
console.log(collection);
};
// Only change code below this line
// Only change code above this line
}
Solution
// solution required