leetcode 83. Remove Duplicates from Sorted List
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
/**
* 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 head;
ListNode res = head;
ListNode cur = head;
while(cur.next != null ){
while(cur.next != null && cur.val == cur.next.val){
cur.next = cur.next.next;
}
if(cur.next != null)
cur = cur.next;
else{
continue;
}
}
return res;
}
}
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