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linkedListDuplicateElements.js
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linkedListDuplicateElements.js
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class node{
constructor(data){
this.data=data
this.next=null
}
}
class linkedlist{
constructor(){
this.head=null
this.tail=null
this.length=0
}
addValue(value){
let newNode=new node(value)
if(!this.head){
this.head=newNode
this.tail=newNode
}else{
this.tail.next=newNode
this.tail=newNode
}
}
duplicate(){
let seen=new Set
let current=this.head
let previous=null
while(current!=null){
if(seen.has(current.data)){
previous.next=current.next
}else{
seen.add(current.data)
previous=current
}
current=current.next
}
}
display(){
let current=this.head
while(current!==null){
console.log(current.data)
current=current.next
}
}
}
let ll=new linkedlist
ll.addValue(10)
ll.addValue(20)
ll.addValue(30)
ll.addValue(20)
ll.addValue(30)
ll.addValue(50)
ll.addValue(50)
ll.duplicate()
ll.display()