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83. Remove Duplicates from Sorted List - Easy

时间:2018-12-27 10:23:57      阅读:118      评论:0      收藏:0      [点我收藏+]

标签:example   next   ace   nbsp   each   output   div   for   lis   

Given a sorted linked list, delete all duplicates such that each element appear only once.

Example 1:

Input: 1->1->2
Output: 1->2

Example 2:

Input: 1->1->2->3->3
Output: 1->2->3

 

time: O(n), space: O(1)

/**
 * Definition for singly-linked list.
 * public class ListNode {
 *     int val;
 *     ListNode next;
 *     ListNode(int x) { val = x; }
 * }
 */
class Solution {
    public ListNode deleteDuplicates(ListNode head) {
        if(head == null || head.next == null) {
            return head;
        }
        ListNode cur = head;
        while(cur != null && cur.next != null) {
            if(cur.val == cur.next.val) {
                cur.next = cur.next.next;
            } else {
                cur = cur.next;
            }
        }
        return head;
    }
}

 

83. Remove Duplicates from Sorted List - Easy

标签:example   next   ace   nbsp   each   output   div   for   lis   

原文地址:https://www.cnblogs.com/fatttcat/p/10182904.html

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