0816 Valid parentheses
Given a string containing only '(', ')', '{', '}', '[', ']', check whether the string is valid. An open parenthesis must be closed with a...
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Tag: leetcode
Leetcode 2144. Minimum Cost of Buying Candies With Discount (Python)
February 1, 2024
by Harriet Thompson-Hughes
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This is the first question of the 70th biweekly competition last Saturday night. The difficulty is Easy. It feels like it examines greed and array...
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Ⅳ LeetCode | 377. Portfolio combined
February 1, 2024
by Aarav Sami
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Subject to describe links: https://leetcode-cn.com/problems/combination-sum-iv/ thought analysis circular array, if the current position number num is less than the target, the recursion will tar
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[luffy]_leetcode- 491-increment subsequence
February 1, 2024
by 李馨儀
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Given an integer array nums, find and return all the different incrementing subsequences of the array, which have at least two elements. You can return...
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LeetCode brush problem 20- Simple – valid parentheses
February 1, 2024
by Susan Jones
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"This is the fifth day of my participation in the First Challenge 2022. For details: First Challenge 2022." @[TOC] ☀️ Foreword ☀️ algorithm as an...
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[Luffy]_leetcode-53- maximum subarray sum
February 1, 2024
by Gokul Chacko
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Given an integer array nums, find a contiguous subarray that contains at least one element and return the maximum sum. A subarray is a contiguous...
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20. Valid brackets
February 1, 2024
by Hayley Collis
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Effective given a bracket includes only '(',') ', '{','} ', '/', ' 'the string s, determine whether a string is effective. A valid string must...
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Leetcode 875. Koko Eating Bananas (Python)
February 1, 2024
by 楊冠霖
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Leetcode 875. Koko Eating Bananas (Python) mainly examines the binary search method
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[luffy]_leetcode-56- Merge interval
February 1, 2024
by Katie Lambert
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[title address] station address [B] as an array intervals said several interval set, in which individual interal intervals [I] = [force, endi]. Please merge all...
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Leetcode 1510. Stone Game IV (Python)
February 1, 2024
by Frank Green
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Leetcode 1510. Stone Game IV (Python) is a classic title. The first method uses memorized DFS, and the second method uses dynamic programming
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[luffy]_leetcode-1288- Delete the covered range
February 1, 2024
by Aarna Swamy
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[topic address] [B station address] give you a list of intervals, please delete the intervals covered by other intervals. Interval [a,b) is considered to be...
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☆ Clocking algorithm ☆LeetCode 79, word search algorithm parsing
February 1, 2024
by Amira Goda
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Hello everyone, I am a little Magic dragon, Unity3D software engineer, VR, AR, virtual simulation direction, update software development skills from time to time, life...
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Leetcode 2141. Maximum Running Time of N Computers (python)
February 1, 2024
by 徐建宏
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The code is very simple, but the code is long and smelly, and it is not too Hard to understand.
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Having been an interviewer at Microsoft for 4 years, share the correct posture to swipe LeetCode
February 1, 2024
by Janice Buckley
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I led a development team in Microsoft and worked as an interviewer for four years. I already know that children nowadays like to brush questions,...
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Solving Questions With Brainpower (Python)
February 1, 2024
by 蔡馨儀
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This paper introduces the third question of the weekly competition, the difficulty Medium, which takes one hour and is not too difficult. It examines dynamic...
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2029. Stone game IX: Discuss the game by case
February 1, 2024
by Nehmat Chauhan
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"This is day 3 of my participation in the 2022 First Revision Challenge. For details, see: 2022 First Revision Challenge." Title description: This is 2029...
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[Luffy]- Closures and immediate functions
February 1, 2024
by Eva Bansal
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"This is the third day of my participation in the First Challenge 2022, for more details: First Challenge 2022". Closures versus immediate functions have you...
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The old driver takes you through LeetCode
February 1, 2024
by Krystal Middleton
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The old driver takes you through LeetCode
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17, telephone number letter combination algorithm parsing
February 1, 2024
by Madison Johnson
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Small knowledge, big challenge! This article is participating in the creation activity of "Essential Tips for Programmers". Hello, everyone, I am a little Magic dragon,...
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Leetcode 198
February 1, 2024
by Prerak Agrawal
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You are a professional thief, planning to rob the houses along the street. There is a certain amount of cash hidden in each room, and...
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Leetcode brush problem record -539. Minimum time difference using pigeon nest principle optimization method
February 1, 2024
by Cole Salas
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This is my first day in the 2022 First Text Challenge. Today I learned about pigeon nests and some special uses that sort() didn't know...
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[Luffy]_ together brush leetcode interview question 04.12. Sum path
February 1, 2024
by 王惠如
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This is the first day of my participation in the 2022 First Revision Challenge. The summation path is given a binary tree in which each...
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17. Alphabetic combinations of telephone numbers
February 1, 2024
by Aaryahi Keer
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Given a string containing only the numbers 2-9, return all the letter combinations it can represent. The answers can be returned in any order. The...
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[Luffy]_ Leetcode_45 (Happy Number)
February 1, 2024
by Suzanne Patel
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If you feel the pain of thinking hard and not being able to solve the problem, think more about the feeling after the breakthrough, think...
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629. K pairs of inversions: a sequential DP state transition optimization problem
February 1, 2024
by Mr. John Morton
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"This is the 11th day of my participation in the Gwen Challenge in November. See details: The Last Gwen Challenge in 2021." This is an...
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[luffie]_leetcode-106- Construct a binary tree by traversing sequences in middle and rear order
February 1, 2024
by Donald Morris
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[答 案] [B station address] A binary tree is constructed according to the middle order traversal and the post order traversal of a tree. Note:...
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17- LeetCode (Pancake sorting)
February 1, 2024
by Benjamin Roberts
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I did not expect that one day we will spread pancake technology to the algorithm to solve the problem, of course, association, we did before...
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Algorithm: binary tree in order traversal
February 1, 2024
by Katherine Jones
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What is middle order traversal? We traverse the tree the same way we traverse the left subtree -- the root node -- the right subtree,...
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Leetcode 2138. Divide a String Into Groups of Size K (Python)
February 1, 2024
by Anna Saunders-Baker
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This paper introduces the first question of week 276. It is Easy to send points. It examines the basic content of string stitching.
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LeetCode A letter combination of a phone number
February 1, 2024
by Robert Carpenter
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Given a string containing only the numbers 2-9, return all the letter combinations it can represent. The mapping of numbers to letters is given as...
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