83. Remove Duplicates from Sorted List
题目描述:
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
.
这道题目很简单,就不具体分析解题思路了。
解决:
/**
* 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)
return null;
ListNode p=head;
while(p!=null&&p.next!=null){
if(p.val == p.next.val){
p.next = p.next.next;
}
else{
p = p.next;
}
}
return head;
}
}