p83

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LeetCode p83 Remove Duplicates from Sorted List 题解

1.题目：

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.

题意：

去掉一个有序链表中重复的数。

2.解题思路:

见代码

3.代码

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

4.一些总结：