leetcode136,Leetcode639. Decode Ways II
題目: A message containing letters from A-Z is being encoded to numbers using the following mapping way: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Beyond that, now the encoded string can also contain the character ‘*’, whic
时间:2023-12-25  |  阅读:27
leetcode 快速排序,Leetcode打卡目錄
Leetcode打卡目錄 摘自小詹學Python
时间:2023-12-09  |  阅读:27
jekins教程,LeetCode動態規劃系列教程(上)
大家好!相信讀者你絕對想不到,我們居然出了一個Leetcode的系列。jekins教程?從去年7月到現在,我已經在北京的互聯網公司呆了整整一年的時間。這中間經歷過各種各樣的酸甜苦辣,自己為了面試刷題的過程(從杉數到滴滴——未入門算法工程師再
时间:2023-12-09  |  阅读:29
LEETCODE,[LeetCode]Link List Cycle
Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space? 思考:快慢指針,快指針一次走兩步,慢指針一次一步。若快指針跟慢指針指向同一個結點,則有環。若快指針到達鏈表末尾即指向NULL
时间:2023-12-06  |  阅读:29
leetcode并查集,[LeetCode]Rotate List
Given a list, rotate the list to the right by?k?places, where?k?is non-negative. For example:Given?1->2->3->4->5->NULL?and?k?=?2,return?4->5->1->2->3->NULL. 思考:先首尾連成環,head前進(len-k%len)步,拆環
时间:2023-12-06  |  阅读:29
leetcode并查集,Leetcode Insertion Sort List
Sort a linked list using insertion sort. 鏈表的插入排序,其實有2種特殊情況: 1、插入的值插入到已排序的末尾。 leetcode并查集,2、插入的值插入到已排序的最前端。 主要設置了3個指針。 1、pStart是已排序鏈表的開始位置。 2、pInsert是待插入的位置。 LE
时间:2023-12-06  |  阅读:31
leetcode并查集,LeetCode OJ - Construct Binary Tree from Preorder and Inorder Traver
題目: Given preorder and inorder traversal of a tree, construct the binary tree. Note:You may assume that duplicates do not exist in the tree. 解題思路: 前序遍歷序列的第一個元素肯定為根節點;然后再在中序遍歷序列中找到該節點,并以
时间:2023-12-06  |  阅读:29
leetcode 最長公共子序列,[LeetCode] Construct Binary Tree from Preorder and Inorder Trav
? Given preorder and inorder traversal of a tree, construct the binary tree. Note:You may assume that duplicates do not exist in the tree. ? leetcode 最長公共子序列?這道題要求用先序和中序遍歷來建立二叉樹,跟之前那道Construct Binary Tree from Inorde
时间:2023-12-06  |  阅读:28
leetcode70,LeetCode 127. Word Ladder
原題鏈接在這里:https://leetcode.com/problems/word-ladder/ leetcode70。題目: Given two words (beginWord?and?endWord), and a dictionary's word list, find the length of shortest transformation sequence from?beginWord?to?endWord, such that:
时间:2023-12-06  |  阅读:31
leetcode 課程表,leetcode Course Schedule II
題目連接 https://leetcode.com/problems/course-schedule-ii/?? Course Schedule II Description There are a total of n courses you have to take, labeled from 0 to n - 1. leetcode 課程表?Some courses may have prerequisites, for example to take course 0 you ha
时间:2023-12-06  |  阅读:30

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