141. Linked List Cycle(Easy)2019.7.10 题目地址https://leetcode.com/problems/linked-list-cycle/ Copy Given a linked list, determineifit has a cycleinit.Torepresent a cycleinthe given linked list, we use anintegerpos which represents the position (0-indexed)inthe linked listwheretail connectst...
LeetCode Top 100 Liked Questions 141. Linked List Cycle (Java版; Easy) 题目描述 Given a linked list, determine if it has a cycle in it. To represent a cycle in the given linked list, we use an integer pos which represents the position (0-indexed) in the linked list where tail conne...
方法:先把linked list分成两半之后,reverse the second half。然后比较两半的node的值。 time complexity:O(n) space complexity:O(1) #Definition for singly-linked list.#class ListNode:#def __init__(self, val=0, next=None):#self.val = val#self.next = nextclassSolution:defisPalindrome(self, hea...
Top Interview Questions Overview This is LeetCode's official curated list of Top classic interview questions to help you land your dream job. Our top interview questions are divided into the following series: Easy Collection Medium Collection Hard Collection to help you master Data Structure & Algor...
Leetcode-Easy 234. Palindrome Linked List 描述: 判断一个单链表是否左右对称 代码语言: 代码运行次数: # Definitionforsingly-linked list.#classListNode:# def__init__(self,x):# self.val=x # self.next=NoneclassSolution(object):defisPalindrome(self,head):""":type head:ListNode:rtype:bool"""...
Grokking the Coding Interview: Patterns for Coding Questions.这门课程是一个总结提高的课程,它把算法面试的遇到的题型分成了各种模式,每类题各个击破。比如最经典的sliding window模式,Two pointers模式,快慢指针模式,合并intervals模式,cyclic sort模式,in-place翻转链表模式,树上的BFS,树上的DFS,双Heaps模式,subse...
234. Palindrome Linked List 61. Rotate List 剑指 Offer 18. 删除链表的节点 JZ56 删除链表中重复的...
(Notes: "📖" means you need to subscribe to LeetCode premium membership for the access to premium questions.) Algorithms Bit Manipulation Array String Linked List Stack Queue Heap Tree Hash Table Math Two Pointers Sort Recursion Binary Search Binary Search Tree Breadth-First Search Depth-First ...
237LinkedList;Delete Node in a Linked List Hash Table:利用 Hash 函数来将数据映射到固定的一块区域,方便 O(1) 时间内读取以及修改。 37. Sudoku Solver 数独是一个经典的回溯问题,配合 HashTable 的话,运行时间将大幅减少。 IDTagsSolution 1Array;HashTable;Two Sum ...
welcome to my blog LeetCode Top Interview Questions 217. Contains Duplicate (Java版; Easy) 题目描述 Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false...