Given a singly linked list of characters, write a function that returnstrueifthe given listispalindrome,elsefalse. 题解1 - 使用辅助栈 根据栈的特性(FILO),可以首先遍历链表并入栈(最后访问栈时则反过来了),随后再次遍历链表并比较当前节点和栈顶元素,若比较结果完全相同则为回文。 又根据回文的特性,实际上...
Given a singly linked list, determine if it is a palindrome. Follow up: Could you do it in O(n) time and O(1) space? 思路1:创建一个ArrayList用于保存每个节点的value,遍历LinkedList将每个节点的value依次add到ArrayList中。 利用双指针,一个在ArrayList的首部,一个在ArrayList的尾部,相向遍历看其valu...
Leetcode之Palindrome Linked List 问题 问题描述: Given a singly linked list, determine if it is a palindrome. Follow up: Could you do it in O(n) time and O(1) space? 示例: 1->2->9->4->9->2->1 return true; 1->2-&... ...
Implement a function to check if a linked list is a palindrome. Example Given1->2->1, return true. 分析: 比较容易的方法是把所有的数存在ArrayList里,然后查看是否是palindrome,但是空间复杂度为O(n)。 还有就是先找到list的中点,然后把后半段reverse,然后再进行比较。但是这种方法不容易想到。 1 /**...
Palindrome Linked List 链表代码人生 Given a singly linked list, determine if it is a palindrome. Follow up: Could you do it in O(n) time and O(1) space? 思路: 把链表一分为二。把右边的一半翻转,再逐个比对左右的链表就可以。 /**
PALINDROME LIST In this blog, we have to figure out a palindrome linked list. A Palindrome linked list means a Linked List which has values in a palindromic form i.e. values from left to right will be the same as the values from right to left in the linked list. Let’s discuss how...
Palindrome Linked List Given a singly linked list, determine if it is a palindrome. Follow up: Could you do it in O(n) time and O(1) space? 反转链表 复杂度 时间O(N) 空间 O(1) 思路 两个指针都从头出发,快指针每次两步,慢指针每次一步,这样快指针的下一个或下下个为空时,慢指针就在链...
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Palindrome Linked List listpalindromespacetime链表 Given a singly linked list, determine if it is a palindrome. Follow up: Could you do it in O(n) ti triplebee 2018/01/12 5230 LeetCode 234. 回文链表 编程算法 题目请判断一个链表是否为回文链表。示例 1: 输入: 1->2 输出: false 示例 2: ...
Given a singly linked list, determine if it is a palindrome.Example 1:Input: 1->2Output: falseExample 2:Input: 1->2->2->1Output: trueFollow up:Could you do it in O(n) time and O(1) space?来源:力扣(LeetCode)链接:https://leetcode-cn.com/problems/palindrome-linked-list著作权归领...