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LinkedList.js
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LinkedList.js
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class Node {
#item
#next
constructor(item, next) {
this.#item = item
this.#next = next
}
get next() {
return this.#next
}
get item() {
return this.#item
}
}
class LinkedList {
#head
#nodesCount
constructor() {
this.#head = null
this.#nodesCount = 0
}
push(item) {
const node = new Node(item, this.#head)
this.#head = node
this.#nodesCount++
}
pop() {
const isEmpty = this.isEmpty()
if (isEmpty) {
throw new Error("This LinkedList is empty!")
}
const leastRecentItem = this.#head.item
this.#head = this.#head.next
this.#nodesCount--
return leastRecentItem
}
size() {
const size = this.#nodesCount
return size
}
isEmpty() {
const isEmpty = this.#head === null
return isEmpty
}
*[Symbol.iterator]() {
for(let item = this.pop(); !this.isEmpty(); item = this.pop()) {
yield item
}
}
}
module.exports = LinkedList