[Leetcode] Remove Duplicates from Sorted List

Problem

Given a sorted linked list, delete all duplicates such that each element appear only once.
For example,
Given 1->1->2, return 1->2.
Given 1->1->2->3->3, return 1->2->3.

Analysis

  • Use pointer operation
  • If next element is repeated, then
    • curr.next = curr.next.next
  • Else
    • curr = curr.next

Code

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