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removeDuplicates.java
executable file
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removeDuplicates.java
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import java.io.*;
import java.util.*;
class Node{
int data;
Node next;
Node(int d){
data=d;
next=null;
}
}
class Solution
{
public static Node removeDuplicates(Node head) {
//Write your code here
ArrayList<Integer> dataList = new ArrayList<Integer>();
if(head!= null){
Node prev= head;
dataList.add(head.data);
while(prev.next!=null){
Node temp = prev.next;
if(!dataList.contains(temp.data)){
dataList.add(temp.data);
prev =prev.next;
}else{
prev.next = temp.next;
temp=null;
}
}
}
return head;
}
public static Node insert(Node head,int data)
{
Node p=new Node(data);
if(head==null)
head=p;
else if(head.next==null)
head.next=p;
else
{
Node start=head;
while(start.next!=null)
start=start.next;
start.next=p;
}
return head;
}
public static void display(Node head)
{
Node start=head;
while(start!=null)
{
System.out.print(start.data+" ");
start=start.next;
}
}
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
Node head=null;
int T=sc.nextInt();
while(T-->0){
int ele=sc.nextInt();
head=insert(head,ele);
}
head=removeDuplicates(head);
display(head);
}
}