队列（基于数组）
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class Queue {
constructor() {
this.list = []
}
push(value) {
this.list.push(value)
}
pop() {
return this.list.shift()
}
peek() {
return this.list[0]
}
isEmpty() {
return this.list.length === 0
}
clear() {
this.list = []
}
size() {
return this.list.length
}
toString() {
return this.list.join(",")
}
}
// 测试代码
const queue = new Queue();
queue.push(1)
queue.push(3)
queue.push(5)
queue.pop();
queue.push(7)
console.log(queue.toString())
console.log(queue.peek())
console.log(queue.size())
console.log(queue.isEmpty())
queue.clear();
console.log(queue.toString())
console.log(queue.isEmpty())
JavaScript
INFO