LeetCode 20: Valid Parentheses
Given a string containing only '(', ')', '{', '}', '[', ']', check whether the string is valid. Given a string containing just the characters '(',...
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Tag: leetcode
[LeetCode 1047. Delete all adjacent duplicates in string
January 31, 2024
by Janice Buckley
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Nuggets in the recent brush topic activities, also come to join in the excitement. This is leetCode's task of the day given the string S...
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LeetCode — 160. Intersecting linked lists
January 31, 2024
by Elliot Chadwick-Jones
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Write a program to find the start node where two singly linked lists intersect. The intersection begins at node C1. Create two Pointers and initializes...
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Leetcode-4. Find the median of two positive ordinal groups
January 31, 2024
by 沈傑克
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Given two positive-ordered (from small to large) arrays of size m and n, nums1 and nums2, respectively. Please find and return the median of the...
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[Luffy]_leetcode-703- The k-th element in the data stream
January 31, 2024
by Alexis Thompson
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Design a class that finds the KTH element in a data stream. This is the fourth day of my November update Challenge. Notice it's the...
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“LeetCode” game 266 of the Week (I)
January 31, 2024
by 龍美玲
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Link to https://leetcode-cn.com/contest/weekly-contest-266 there are four questions in the weekly contest. Today we will bring you the first two questions. Topic 5918. Vowel substring fractions...
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[Luffy]_leetcode- Interview 02.03- Delete intermediate nodes
January 31, 2024
by Ross Brown-Anderson
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If a node in a linked list is neither the top node nor the bottom node, it is called an "intermediate node" of the list....
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Leetcode-63- Different paths II
January 31, 2024
by Hiran Kaur
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A robot is located in the upper left corner of an M x N grid (the starting point is marked "Start" in the figure below)....
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[luffy]_ brush leetcode 143 together
January 31, 2024
by Cheryl Moore
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Hello, everyone, I am the beaten Amumu, love algorithm front-end fish old. Recently, I will frequently share with you my thoughts and experiences in the...
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LeetCode Generate Parentheses (022)
January 31, 2024
by Mamooty Din
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Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. You can use a recursive approach for the generation of...
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[luffy]_LeetCode problem 20 valid brackets
January 31, 2024
by 王怡君
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Title description given a include only '(',') ', '{','} ', '/', ' 'the string s, determine whether a string is effective. A valid string must...
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[Luffy]_leetcode-344- Reverses string
January 31, 2024
by Mark Mccoy
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Write a function that reverses the input string. This is the fourth day of my November update Challenge. The input string is given as a...
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[luffie]_leetcode-144- Binary tree traversal
January 31, 2024
by Nehmat Chauhan
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This is the first day of my participation in the Last update Challenge in 2021. This is the last update Challenge in 2021. This is...
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Design the front, middle and back queue
January 31, 2024
by Mary Roberts
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"This is the 20th day of my participation in the December Gwen Challenge. See details of the event: The last Gwen Challenge 2021" 1670. Design...
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[Luffy] The weight of the last stone
January 31, 2024
by 羅雅萍
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The weight of the last stone https://leetcode-cn.com/problems/last-stone-weight Take the two largest stones, destroy each other, and put the remaining weight back. Take out the two...
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[Luffy]_leetcode-633- Sum of square numbers
January 31, 2024
by Trevor Clark
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Given a non-negative integer C, you need to determine whether there are two integers A and B such that A2 + b2 = c.
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LeetCode solution: power of 231. 2, bit operation takes the rightmost 1 in binary, JavaScript, detailed comments
January 31, 2024
by Todd Garcia
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A power of two satisfies the condition in binary: a 1 followed by n zeros, for example, 8=00001000. If it is not a power of...
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Leetcode15 history the most detailed answer key # 3 sum | punch brush
January 31, 2024
by Melissa Evans
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Given an array nums containing n integers, determine if there are three elements a, B, and c in nums such that a + b +...
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[Luffy]_ Intimate string
January 31, 2024
by Graeme Pope
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You are given two strings s and goal. Return true as long as we can get the same result as goal by swapping two letters...
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[Luffy]_leetcode- Offer 06- Print list from end to end
January 31, 2024
by Bhavin Thaman
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Enter the first node of a linked list and return the value of each node from end to end (as an array). Example 1: Limit:...
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[Luffy]_leetcode-1670- Design the front, middle and back queue
January 31, 2024
by Hayley Price
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Please design a queue that supports push and POP operations in the front, middle and back positions. Please complete the Fro.
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[Luffy]_leetcode-1753- Maximum score for removing stones
January 31, 2024
by Miss Hilary Rogers
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[B] You are playing a single player game. You are presented with three piles of stones of a, B, and C. Each round you take...
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[luffy]_leetcode-35- Search for insert position
January 31, 2024
by Janet Robertson
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Given a sorted array and a target value, find the target value in the array and return its index. Returns if the target value does...
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[luffy]_leetcode- Offer 10-i – Fibonacci
January 31, 2024
by Shane Stewart
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Write a function, input n, to find the NTH term of the Fibonacci sequence. The Fibonacci sequence is defined as follows: The Fibonacci sequence starts...
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[Luffy]_leetcode-199- Right view of binary tree
January 31, 2024
by Jill Singh
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Given the root node of a binary tree, imagine yourself standing on the right side of it. Return the values of the nodes visible from...
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Leetcode problem 641 – Designing a loop double-ended queue
January 31, 2024
by Scott Hernandez
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The main difference between a double-ended circular queue and a normal circular queue is that the double-ended circular queue can be inserted and deleted at...
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[Luffy]_leetcode-112- Total of paths
January 31, 2024
by Anay Agarwal
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[B station address] gives you the root node of the binary tree and an integer targetSum representing the targetSum. Check whether there is a path...
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[Luffy]_leetcode-933- Number of recent requests
January 31, 2024
by Taimur Chandra
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Write a RecentCounter class to count the most recent requests within a specific time range. Please implement Recen
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[Luffy]_leetcode-692- first K high frequency words
January 31, 2024
by Anahita Dua
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Given a non-empty list of words, return the first k words that appear most frequently. The answers returned should be sorted in order of word...
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107. Hierarchical traversal of binary trees II
January 31, 2024
by 司懿
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Given a binary tree, return the bottom-up hierarchical traversal of its node values. (that is, layer by layer from left to right, from the layer...
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