83. Delete duplicate elements in sorted list
Given a sorted linked list, remove all duplicate elements such that each element appears only once.
/**
* Definition for singly-linked list.
* public class ListNode {
* int val;
* ListNode next;
* ListNode(int x) { val = x; }
* }
*/
class Solution {
// 执行用时：0 ms, 在所有 Java 提交中击败了100.00%的用户
// 内存消耗：39.5 MB, 在所有 Java 提交中击败了38.83%的用户
public ListNode deleteDuplicates(ListNode head) {
ListNode cur = head;
while(cur != null && cur.next !=null){
if(cur.val == cur.next.val){
ListNode node = cur.next;
cur.next = node.next;
node.next = null;
}else
cur = cur.next;
}
return head;
}
}