Leetcode 83 Remove Duplicates from Sorted List Solution in java | Hindi Coding Community

 

Given the head of a sorted linked list, delete all duplicates such that each element appears only once. Return the linked list sorted as well.

Input: head = [1,1,2,3,3]

Output: [1,2,3]

class Solution {

public ListNode deleteDuplicates(ListNode head) {

if(head == null || head.next == null)return head;

head.next = deleteDuplicates(head.next);

return head.val == head.next.val ? head.next : head;

}

}