[LeetCode-JAVA] Remove Linked List Elements

题目：

Remove all elements from a linked list of integers that have value val.

Example
Given: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6
Return: 1 --> 2 --> 3 --> 4 --> 5

思路：设置前置指针，并随之移动。

代码：

public class Solution {public ListNode removeElements(ListNode head, int val) {ListNode req = new ListNode(0);req.next = head;ListNode pre = req;while(head != null){if(head.val == val){pre.next = head.next;}elsepre = pre.next;head = head.next;}return req.next;}
}

转载于:https://www.cnblogs.com/TinyBobo/p/4543536.html

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