Remove duplicates from an unsorted linked list

Question

import java.util.*;
/*
 *  Remove duplicates from an unsorted linked list
 */
public class LinkedListNode {  
    public int data;  
    public LinkedListNode next;          


        

Answer 1

Ans is in C . first sorted link list sort() in nlog time and then deleted duplicate del_dip() .

node * partition(node *start)
{
    node *l1=start;
    node *temp1=NULL;
    node *temp2=NULL;
    if(start->next==NULL)
        return start;

    node * l2=f_b_split(start);
      if(l1->next!=NULL)
        temp1=partition(l1);
      if(l2->next!=NULL)
            temp2=partition(l2);

if(temp1==NULL || temp2==NULL)
    {
        if(temp1==NULL && temp2==NULL)
        temp1=s_m(l1,l2);

        else if(temp1==NULL)
        temp1=s_m(l1,temp2);

        else if(temp2==NULL)
        temp1=s_m(temp1,l2);
}
    else
            temp1=s_m(temp1,temp2);

    return temp1;
}

node * sort(node * start)
{
    node * temp=partition(start);
        return temp;
}

void del_dup(node * start)
{
  node * temp;
    start=sort(start);
    while(start!=NULL)
        {
        if(start->next!=NULL && start->data==start->next->data  )
            {
                temp=start->next;
                start->next=start->next->next;
                free(temp);
            continue;
            }
        start=start->next;
        }
}

void main()
 {
    del_dup(list1);
    print(list1);
}