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Remove Duplicates from Sorted List

Easy

Topics
Linked List

Given the head of a sorted linked list, delete all duplicates so that each value appears only once. Return the sorted list.

Example 1

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

Example 2

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

Constraints

  • 0 <= number of nodes <= 300
  • -100 <= Node.val <= 100
  • The list is sorted in non-decreasing order.
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