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42 lines (42 loc) · 891 Bytes
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Copy pathqueueMethods.js
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42 lines (42 loc) · 891 Bytes
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class Node{
constructor(value){
this.value = value
this.next = null
}
}
class Queue{
constructor(value){
const newNode = new Node(value)
this.first = newNode
this.last = newNode
this.length = 1
}
enqueue(value){
const newNode = new Node(value)
if(!this.length === 0) {
this.first=newNode
this.last=newNode
}else{
this.last.next=newNode
this.last=newNode
}
this.length++
return this
}
dequeue(value){
if(this.length === 0){
return this
}
let temp = this.first
if(this.length===1){
this.first = null
this.last = null
this.length = 0
return this
}
this.first = this.first.next
temp.next = null
this.length--
return this
}
}