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:33
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:36
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:39
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:37
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:35
leetcode 518,LeetCode : Intersection of Two Linked Lists
Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: A: a1 → a2 ↘ c1 → c2 → c3 ↗ B: b1 → b2 → b3 begin to intersect at node c1. /*** Definition for singly-linked
时间:2023-12-06  |  阅读:27
leetcode all in one,LeetCode Remove K Digits
原題鏈接在這里:https://leetcode.com/problems/remove-k-digits/description/ 題目: Given a non-negative integer?num?represented as a string, remove?k?digits from the number so that the new number is the smallest possible. Note: The length of?nu
时间:2023-12-06  |  阅读:30
LeetCode,Leetcode - Reverse Words
比起POJ弱爆了一題,從后往前掃描一遍,O(n)時間,僅僅要注意各種極端情況就可以,不明確通過率為什么僅僅有13%。 #include<iostream> #include<string> using namespace std;class Solution { public:void reverseWords(string &s
时间:2023-11-19  |  阅读:27
in_top_k,LeetCode 25 Reverse Nodes in k-Group Add to List (劃分list為k組)
題目鏈接:?https://leetcode.com/problems/reverse-nodes-in-k-group/?tab=Description Problem :將一個有序list劃分為k個組,并且每個組的元素逆置 鏈表操作 :遞歸算法? 每次尋找到該組的尾部,然后進行逆置操作,返回頭部
时间:2023-11-19  |  阅读:28
leetcode 5,Minimum Window Substring @LeetCode
不好做的一道題,發現String Algorithm可以出很多很難的題,特別是多指針,DP,數學推導的題。參考了許多資料: http://leetcode.com/2010/11/finding-minimum-window-in-s-which.html http://www.geeksforgeeks.org/find-the-smallest-window
时间:2023-11-19  |  阅读:25

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