题解 | 删除有序链表中重复的元素-I
删除有序链表中重复的元素-I
https://www.nowcoder.com/practice/c087914fae584da886a0091e877f2c79
import java.util.*;
/*
* public class ListNode {
* int val;
* ListNode next = null;
* public ListNode(int val) {
* this.val = val;
* }
* }
*/
public class Solution {
/**
* 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
*
*
* @param head ListNode类
* @return ListNode类
*/
public ListNode deleteDuplicates (ListNode head) {
if(head == null||head.next == null) return head;
ListNode prev = head, cur=head.next, next;
while(cur != null){
next = cur.next;
if(cur.val == prev.val){
prev.next = next;
cur.next = null;
cur = prev;
}
prev = cur;
cur = next;
}
return head;
}
}
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