来源
来源:力扣(LeetCode)
链接:https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list/
描述
给定一个排序链表,删除所有重复的元素,使得每个元素只出现一次。
示例 1:
输入: 1->1->2
输出: 1->2
示例 2:
输入: 1->1->2->3->3
输出: 1->2->3
题解
/*** Definition for singly-linked list.* public class ListNode {* int val;* ListNode next;* ListNode(int x) { val = x; }* }*/class Solution {public ListNode deleteDuplicates(ListNode head) {ListNode current = head;while (current != null && current.next != null) {if (current.val == current.next.val) {current.next = current.next.next;} else {current = current.next;}}return head;}}
复杂度分析
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