Leetcode medium

Leetcode::problem(1650) Lowest Common Ancestor of a Binary Tree 3

Leetcode ps medium

Leetcode::Lowest Common Ancestor of a Binary Tree 3 Link : Leetcode::Lowest Common Ancestor of a Binary Tree 3 level...

Leetcode medium

Leetcode::problem(162) Find Peak Element

Leetcode ps medium

Leetcode::Find Peak Element Link : Leetcode::Find Peak Element level : medium 40 mins to solve. Need to understand the...

Leetcode medium

Leetcode::problem(314) Binary Tree Vertical Order Traversal

Leetcode ps medium

Leetcode::Binary Tree Vertical Order Traversal Link : Leetcode::Binary Tree Vertical Order Traversal level : medium failed to solve, but...

Leetcode medium

Leetcode::problem(973) K Closest points to origin

Leetcode ps medium

Leetcode::K Closest Points to origin Link : Leetcode::K Closest Points to origin level : medium took 15 mins to...

Leetcode medium

Leetcode::problem(50) Pow(x, n)

Leetcode ps medium

Leetcode::Pow(x, n) Link : Leetcode::Pow(x, n) level : medium took 13 mins to solve point implement...

Leetcode medium

Leetcode::problem(31) Next Permutation

Leetcode ps medium

Leetcode::Next Permutation Link : Leetcode::Next Permutation level : medium took 43mins to solve point Given an...

Leetcode medium

Leetcode::problem(525) Contiguous Array

Leetcode ps medium

Leetcode::Contiguous Array Link : Leetcode::Contiguous Array level : medium fail to come up with the idea point...

Leetcode medium

Leetcode::problem(215) Kth Largest Element in an array

Leetcode ps medium

Leetcode::Kth Largest Element in an array Link : Leetcode::Kth Largest Element in an array ...

Leetcode medium

Leetcode::problem(15) 3Sum

Leetcode ps medium

Leetcode::3Sum Link : Leetcode::3Sum level : medium failed on algorithm point Given an integer array nums,...

Leetcode medium

Leetcode::problem(1004) Max Consecutive Ones 3

Leetcode ps medium

Leetcode::Max Consecutive Ones 3 Link : Leetcode::Max Consecutive Ones 3 level : medium Failed to come up with the...

Leetcode medium

Leetcode::problem(236) Lowest Common Ancestor of a Binary Tree

Leetcode ps medium

Leetcode::Lowest Common Ancestor of a Binary Tree Link : Leetcode::Lowest Common Ancestor of a Binary Tree level : medium...

Leetcode medium

Leetcode::problem(1820) Maximum Number of Accepted Invitations

Leetcode ps medium

Leetcode::Maximum Number of Accepted Invitations Link : Leetcode::Maximum Number of Accepted Invitations level : medium <h1...

Leetcode medium

Leetcode::problem(1110) Delete Noedes and Return Forest

Leetcode ps medium

Leetcode::Delete Nodes and Return Forest Link : Leetcode::Delete Nodes and Return Forest level : medium 31mins to solve ...

Leetcode medium

Leetcode::problem(418) Sentence Screen Fitting

Leetcode ps medium

Leetcode::Sentence Screen Fitting Link : Leetcode::Sentence Screen Fitting level : medium 35mins to solve point Given...

Leetcode medium

Leetcode::problem(417) Pacific Atlantic Water Flow

Leetcode ps medium

Leetcode::Pacific Atlantic Water Flow Link : Leetcode::Pacific Atlantic Water Flow level : medium point ...

Leetcode medium

Leetcode::problem(2316) Count Unreachable Pairs of Nodes in an Undirected Graph

Leetcode ps medium

Leetcode::Count Unreachable pairs of nodes in an undirected graph Link : Leetcode::Count unreachable pairs of nodes in an undirected graph...

Leetcode medium

Leetcode::problem(690) Employee Importance

Leetcode ps medium

Leetcode::Employee Importance Link : Leetcode::Employee Importance level : medium 20 mins to solve point A data...

Leetcode medium

Leetcode::problem(365) Water and Jug Problem

Leetcode ps medium

Leetcode::Water and Jug Problem Link : Leetcode::Water and Jug Problem Useful link for Bezouts identity level : medium fail to...

Leetcode medium

Leetcode::problem(366) Find Leaves of Binary Tree

Leetcode ps medium

Leetcode::Find Leaves of Binary Tree Link : Leetcode::Find Leaves of Binary Tree level : medium 23 mins to solve...

Leetcode medium

Leetcode::problem(833) Find And Replace in String

Leetcode ps medium

Leetcode::Find and replace in string Link : Leetcode::Find and replace in string level : medium 47 mins to solve...

Leetcode medium

Leetcode::problem(247) Strobogrammatic Number 2

Leetcode ps medium

Leetcode::Strobogrammatic Number 2 Link : Leetcode::Strobogrammatic Number 2 level : medium 48 mins to solve point ...

Leetcode medium

Leetcode::problem(681) Next Closest Time

Leetcode ps medium

Leetcode::Next Closest Time Link : Leetcode::Next Closest Time level : medium 38mins to solve point Given...

Leetcode medium

Leetcode::problem(1509) Minimum Difference Between Largest and Smallest Value in Three Moves

Leetcode ps medium

Leetcode::Minimum Difference Between Largest and Smallest Value in Three Moves Link : Leetcode::Minimum Difference Between Largest and Smallest Value in...

Leetcode medium

Leetcode::problem(678) Valid Parenthesis String

Leetcode ps medium

Leetcode::Valid Parenthesis String Link : Leetcode::Valid Parenthesis String level : medium 10mins to solve point Given...

Leetcode medium

Leetcode::problem(1249) minimum remove to make valid parentheses

Leetcode ps medium

Leetcode::Minimum Remove to Make Valid Parentheses Link : Leetcode::Minimum Remove to Make Valid Parentheses level : medium 10 mins...

Leetcode medium

Leetcode::problem(1136) Parallel Courses

Leetcode ps medium

Leetcode::Parallel Courses Link : Leetcode::Parallel Courses level : medium 20mins to solve point You are given...

Leetcode medium

Leetcode::problem(2863) Maximum Length of Semi-Decreasing Subarrays

Leetcode ps medium

Leetcode::Maximum Length of Semi-Decreasing Subarrays Link : Leetcode::Maximum Length of Semi-Decreasing Subarrays level : medium 47mins to solve ...

Leetcode medium

Leetcode::problem(2116) Check if a Parentheses String Can be valid

Leetcode ps medium

Leetcode::Check if a parentheses string can be valid Link : Leetcode::Check if a parentheses string can be valid level...

Leetcode medium

Leetcode::problem(1101) The Earliest Moment When Everyone Become Friends

Leetcode ps medium

Leetcode::The Earliest Moment When Everyone Become Friends Link : Leetcode::The Earliest Moment When Everyone Become Friends level :...

Leetcode medium

Leetcode::problem(347) Top K Frequent Elements

Leetcode ps medium

Leetcode::Top K Frequent Elements Link : Leetcode::Top K Frequent Elements level : medium point ...

Leetcode medium

Leetcode::problem(45) Jump Game 2

Leetcode ps medium

Leetcode::Jump Game 2 Link : Leetcode::Jump Game 2 level : medium point You are...

Leetcode medium

Leetcode::problem(2265) Count Nodes Equal to Average of Subtree

Leetcode ps medium

Leetcode::Count Nodes Equal to Average of Subtree Link : Leetcode::Count Nodes Equal to Average of Subtree level :...

Leetcode medium

Leetcode::problem(207) Course Schedule

Leetcode ps medium

Leetcode::Course Schedule Link : Leetcode::Course Schedule level : medium failed : 120 Solved with edit’s way point...

Leetcode medium

Leetcode::problem(900) RLE Iterator

Leetcode ps medium

Leetcode::RLE Iterator Link : Leetcode::RLE Iterator level : medium point Run-Length encoded array is...

Leetcode medium

Leetcode::problem(54) Spiral Matrix

Leetcode ps medium

Leetcode::Spiral Matrix Link : Leetcode::Spiral Matrix level : medium point Given an m x...

Leetcode medium

Leetcode::problem(71) Simplify Path

Leetcode ps medium

Leetcode::Simplify Path Link : Leetcode::Simplify Path level : medium point Given a string path,...

Leetcode medium

Leetcode::problem(540) Single Element in a Sorted Array

Leetcode ps medium

Leetcode::Single Element in a Sorted Array Link : Leetcode::Single Element in a Sorted Array level : medium ...

Leetcode medium

Leetcode::problem(11) Container With Most Water

Leetcode ps medium

Leetcode::Container With Most Water Link : Leetcode::Container With Most Water level : medium point ...

Leetcode medium

Leetcode::problem(71) Simplify path

Leetcode ps medium

Leetcode:Simplify Path Link : Leetcode::Simplify path level : medium point A directory type string...

Leetcode medium

Leetcode::problem(11) container with most water

Leetcode ps medium

Leetcode::Continaer with most water Link : Leetcode::Container with most water level : medium point ...

Leetcode medium

Leetcode::problem(75) Sort colors

Leetcode ps medium

Leetcode::Sort Colors Link : Leetcode::Sort Colors level : medium point Given an array nums...

Leetcode medium

Leetcode::problem(56) Merge Intervals

Leetcode ps medium

Leetcode::Merge Intervals Link : Leetcode::Merge Intervals level : medium point Given an array of...

Leetcode medium

Leetcode::problem(57) Insert Interval

Leetcode ps medium

Leetcode::Insert Interval Link : Leetcode::Insert Interval level : medium fail to solve point...

Leetcode medium

Leetcode::problem(48) Rotate Image

Leetcode ps medium

Leetcode::Rotate Image Link : Leetcode::Rotate Image level : medium point n x n 2D...

Leetcode medium

Leetcode::problem(34) Find First and Last Position of Element in Sorted Array

Leetcode ps medium

Leetcode::Find First and Last Position of Element in Sorted Array Link : Leetcode::Find First and Last Position of Element in...

Leetcode medium

Leetcode::problem(22) Generate Parentheses

Leetcode ps medium

Leetcode::Generate Parentheses Link : Leetcode::Generate Parentheses level : medium point Given n pairs of...

Leetcode medium

Leetcode::problem(647) Palindromic Substring

Leetcode ps medium

Leetcode::Palindromic Substring Link : Leetcode::Palindromic Substring level : medium point Given a string s,...

Leetcode medium

Leetcode::problem(1254) Number of Closed Islands

Leetcode ps medium

Leetcode::Number of Closed Islands Link : Leetcode::Number of Closed Islands level : medium point ...

Leetcode medium

Leetcode::problem(2510) Check if there is a Path with equal number of 1's and 0's

Leetcode ps medium

Leetcode::Check if there is a path with equal number of 1’s and 0’s Link : Leetcode::Check if there is a...

Leetcode medium

Leetcode::problem(2104) Sum of Subarray Ranges

Leetcode ps medium

Leetcode::Sum of Subarray Ranges Link : Leetcode::Sum of Subarray Ranges level : medium point ...

Leetcode medium

Leetcode::problem(875) Koko Eating Bananas

Leetcode ps medium

Leetcode::Koko Eating Bananas Link : Leetcode::Koko Eating Bananas level : medium point Return the...

Leetcode medium

Leetcode::problem(394) Decode String

Leetcode ps medium

Leetcode::Decode String Link : Leetcode::Decode String level : medium point Encoded string is given,...

Leetcode medium

Leetcode::problem(33) Search in Rotated Sorted Array

Leetcode ps medium

Leetcode::Search in Rotated Sorted Array Link : Leetcode::Search in Rotated Sorted Array level : medium <h1...

Leetcode medium

Leetcode::problem(946) Validate Stack Sequence

Leetcode ps medium

Leetcode::Validate Stack Sequence Link : Leetcode::Validate Stack Sequence level : medium point Given two...

Leetcode medium

Leetcode::problem(1020) Number of Enclaves

Leetcode ps medium

Leetcode::Number of Enclaves Link : Leetcode::Number of Enclaves level : medium point Find the...

Leetcode medium

Leetcode::problem(581) Shortest Unsorted Continuous Subarray

Leetcode ps medium

Leetcode::Shortest Unsorted Continuous Subarray Link : Leetcode::Shorted Unsorted Continuous Subarray level : medium point ...

Leetcode medium

Leetcode::problem(402) Remove K Digits

Leetcode ps medium

Leetcode::Remove K digits Link : Leetcode::Remove K Digits level : medium fail Tried 120min point Given...

Leetcode medium

Leetcode::problem(36) Valid Sudoku

Leetcode ps medium

Leetcode::Valid Sudoku Link : Leetcode::Valid Sudoku level : medium point A 9x9 sudoku board...

Leetcode medium

Leetcode::problem(1642) Furthest Building you can reach

Leetcode ps medium

Leetcode::Furthest building you can reach Link : Leetcode::furthest building you can reach level : medium <h1...

Leetcode medium

Leetcode::problem(692) Top K Frequent Words

Leetcode ps medium

Leetcode::Top K Frequent Words Link : Leetcode::Top K Frequent Words level : medium This problem can be simply solved...

Leetcode medium

Leetcode::problem(200) Number of Islands

Leetcode ps medium

Leetcode::Number of Islands Link : Leetcode::Number of Islands level : medium point Find the...

Leetcode medium

Leetcode::problem(2439) Minimize Maximum of Array

Leetcode ps medium

Leetcode::Minimize Maximum of Array Link : Leetcode::Minimize Maximum of Array level : medium point ...

Leetcode medium

Leetcode::problem(39) Combination Sum

Leetcode ps medium

Leetcode::Combination Sum Link : Leetcode::Combination Sum level : medium fail. took 70mins point Distinct integers ‘candidates’...

Leetcode medium

Leetcode::problem(3) Longest Substring Without Repeating Characters

Leetcode ps medium

Leetcode::Longest Substring Without Repeating Characters Link : Leetcode::Longest Substring Without Repeating Characters level : medium 15 mins to solve...

Leetcode medium

Leetcode::problem(53) Maximum Subarray

Leetcode ps medium

Leetcode:: Maximum Subarray Link : Leetcode::Maximum Subarray level : medium point Find the maxium...

Leetcode medium

Leetcode::problem(560) Subarray Sum Equals K

Leetcode ps medium

Leetcode::Subarray Sum Equals K Link : Leetcode::Subarray Sum Equals K level : medium fail : algorithm 65 <h1...

Leetcode medium

Leetcode::problem(1372) Longest ZigZag Path in a Binary Tree

Leetcode ps medium

Leetcode::Longest ZigZag Path in a Binary Tree Link : Leetcode::Longest ZigZag Path in a binary tree level :...