LeetCode
LeetCode is a popular online platform that provides programming and technical interview questions. The site features challenges across a range of difficulties, focusing on algorithms, data structures, and other computer science fundamentals. LeetCode helps users enhance their coding skills, prepare for technical interviews, and engage in programming contests. This topic explores how LeetCode equips individuals with the tools to improve their coding proficiency and problem-solving abilities in a competitive environment.
- GitHub: https://github.com/topics/leetcode
- Wikipedia: https://en.wikipedia.org/wiki/LeetCode
- Created by: LeetCode
- Last updated: 2025-07-12 00:17:14 UTC
- JSON Representation
https://github.com/emahtab/min-cost-to-connect-all-points
Find the min cost for the Minimum Spanning Tree (MST)
leetcode minimum-spanning-tree prims-algorithm
Last synced: 28 Mar 2025
https://github.com/emahtab/verifying-an-alien-dictionary
Verifying an alien dictionary
alien dictionary leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/min-stack
Min Stack
constant-time leetcode problem-solving stack
Last synced: 28 Mar 2025
https://github.com/emahtab/number-of-provinces
Find number of connected components in a graph
bfs connected-components dfs graph leetcode
Last synced: 28 Mar 2025
https://github.com/emahtab/permutations
Permutations
leetcode permutations problem-solving recursion
Last synced: 28 Mar 2025
https://github.com/emahtab/topological-sort-problems
Topological Sort Problems
kahns-alogrithm leetcode topological-sort
Last synced: 28 Mar 2025
https://github.com/emahtab/ugly-number
Find whether a number is an Ugly number
leetcode problem-solving ugly-number
Last synced: 28 Mar 2025
https://github.com/emahtab/sort-list
leetcode linked-list merge-sort problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/single-number
Single Number
hashset leetcode problem-solving xor
Last synced: 28 Mar 2025
https://github.com/emahtab/random-pick-index
Random pick index
constant-space leetcode problem-solving random
Last synced: 28 Mar 2025
https://github.com/emahtab/spiral-matrix
Spiral Traversal of a 2D Matrix
leetcode problem-solving spiral-traversal
Last synced: 28 Mar 2025
https://github.com/emahtab/reverse-bits
bit-manipulation leetcode problem-solving reverse-bits
Last synced: 10 Jun 2025
https://github.com/emahtab/string-to-integer-atoi
leetcode problem-solving string-to-number
Last synced: 28 Mar 2025
https://github.com/emahtab/shuffle-an-array
Shuffle an array
array fisher-yates-shuffle leetcode problem-solving shuffle
Last synced: 28 Mar 2025
https://github.com/emahtab/search-in-a-binary-search-tree
Search in a binary search tree
binary-search-tree leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/odd-even-linked-list
Odd Even Linked List
leetcode linked-list odd-even problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/same-tree
Check whether two binary trees are same
binary-tree dfs leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/roman-to-integer
Roman to Integer
leetcode problem-solving roman-numerals
Last synced: 28 Mar 2025
https://github.com/emahtab/walls-and-gates
Fill the grid with the distance to the nearest gate
breadth-first-search depth-first-search leetcode
Last synced: 28 Mar 2025
https://github.com/emahtab/reverse-linked-list
Reverse a singly Linked List
leetcode linked-list problem-solving reverse
Last synced: 28 Mar 2025
https://github.com/emahtab/remove-duplicates-from-sorted-array
Remove Duplicated from Sorted Array
leetcode problem-solving remove-duplicates
Last synced: 28 Mar 2025
https://github.com/emahtab/remove-linked-list-elements
Remove Linked List Elements
leetcode linked-list problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/ransom-note
Check If Ransom string can be constructed
leetcode problem-solving ransom
Last synced: 28 Mar 2025
https://github.com/emahtab/search-2d-matrix
Search 2D Matrix
binary-search leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/product-of-array-except-self
Product of array except self
array leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/power-of-three
Determine whether a number is power of three.
leetcode maths problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/unique-binary-search-trees
Count the total number of BST possible with n numbers
binary-search-tree dynamic-programming leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/sum-of-two-integers
Sum two integers without using + operator
bit-shifting bitwise-operators leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/symmetric-binary-tree
Check whether a Binary Tree is Symmetric around its center
binary-tree leetcode problem-solving symmetric-binary-tree
Last synced: 28 Mar 2025
https://github.com/emahtab/palindrome-linked-list
Check If Linked List is Palindrome
leetcode linked-list palindrome problem-solving
Last synced: 15 Jun 2025
https://github.com/emahtab/next-greater-element-i
leetcode next-greater-element stack
Last synced: 28 Mar 2025
https://github.com/emahtab/surrounded-regions
Surrounded Regions
dfs leetcode problem-solving surrounded-regions
Last synced: 28 Mar 2025
https://github.com/emahtab/next-permutation
Find the next permutation
leetcode permutation problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/merge-two-binary-trees
Merge Two Binary Trees
binary-tree leetcode merge-binary-trees problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/maximum-width-of-binary-tree
Calculate the maximum width of Binary Tree
binary-tree dfs leetcode problem-solving width-of-binary-tree
Last synced: 28 Mar 2025
https://github.com/emahtab/merge-intervals
Merge Intervals Problem
leetcode merge-intervals problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/merge-sorted-array
Merge two sorted arrays
leetcode merge problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/morris-inorder-traversal
Morris Inorder Traversal of a Binary Tree
binary-tree inorder-traversal leetcode morris-traversal problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/middle-of-the-linked-list
Find the middle node of the Linked List
leetcode linked-list problem-solving
Last synced: 17 Jun 2025
https://github.com/emahtab/max-stack
Max Stack
leetcode problem-solving stack
Last synced: 28 Mar 2025
https://github.com/emahtab/longest-palindromic-substring
Find longest palindromic substring in a string
dynamic-programming leetcode palindrome problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/lowest-common-ancestor-of-deepest-leaves
Find the lowest common ancestor of deepest leaves
bfs breadth-first-search leetcode lowest-common-ancestor problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/longest-common-prefix
Find the longest common prefix among strings
leetcode prefix problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/longest-consecutive-sequence
leetcode sorting sorting-algorithms
Last synced: 28 Mar 2025
https://github.com/emahtab/number-of-distinct-islands
Count the number of distinct islands
bfs breadth-first-search depth-first-search dfs leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/kth-largest-element-in-an-array
kth largest element in an array
Last synced: 28 Mar 2025
https://github.com/emahtab/merge-k-sorted-lists
Merge k Sorted Linked Lists
leetcode merge-sorted-lists min-heap priority-queue problem-solving
Last synced: 28 Mar 2025
https://github.com/priyakdey/leetcode
Solutions to problems from leetcode
algorithm-challenges algorithms algorithms-and-data-structures algorithms-datastructures data-structures leetcode leetcode-python leetcode-solutions python3
Last synced: 28 Mar 2025
https://github.com/zcong1993/leetcode-ts-template
leetcode ts template project
leetcode leetcode-tool leetcode-typescript
Last synced: 18 Feb 2025
https://github.com/cyberguru1/golangleetcodesolution
leetcode problems solved in golang
algorithms algorithms-and-data-structures arrays blind75 dp go golang golang-examples interface leetcode lists maps sorting stacks structs
Last synced: 13 Mar 2025
https://github.com/XoXoHarsh/CodersHub
CodersHub is a mobile app that simplifies access to coding profiles by consolidating platforms like LeetCode and Codeforces. It offers a user-friendly interface for viewing profiles, tracking ratings, and navigating daily problems without switching apps or logging in repeatedly.
codeforces competitive-programming firebase geeksforgeeks java leetcode mobile-app
Last synced: 24 Feb 2025
https://github.com/lzhbrian/leetcode-python
My solutions of Leetcode using Python
leetcode leetcode-solutions python
Last synced: 18 Feb 2025
https://github.com/thatbeautifuldream/leetcode-sync
Leetcode Sync
leetcode leetcode-problems leetcode-solutions
Last synced: 21 Mar 2025
https://github.com/miladsade96/leetcode_with_java
Solving Leetcode Challenges using Java Programming Language and Testing them with JUnit
algorithm algorithms algorithms-and-data-structures data-structures java java-8 javaee leetcode leetcode-java leetcode-solutions
Last synced: 13 Mar 2025
https://github.com/atennop1/codeproblemssolutions
Repository for making tasks from Codewars and LeetCode
codewars codewars-solutions cpp learning leetcode leetcode-solutions
Last synced: 23 Feb 2025
https://github.com/emahtab/first-unique-character-in-a-string
Find the first unique character in a string
hashmap leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/intersection-of-two-linked-lists
Intersection of two Linked Lists
hashset intersection leetcode linked-list merge-point problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/course-schedule-ii
leetcode problem-solving queue topological-sort
Last synced: 28 Mar 2025
https://github.com/emahtab/flood-fill
Flood Fill
dfs flood-fill leetcode problem-solving recursion
Last synced: 28 Mar 2025
https://github.com/emahtab/delete-node-in-a-linked-list
Delete node in a linked list
leetcode linked-list problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/implement-strstr
kmp-algorithm leetcode pattern-matching rolling-hash
Last synced: 28 Mar 2025
https://github.com/emahtab/insert-delete-getrandom
Insert delete getRandom() in O(1) average
hashmap leetcode list problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/binary-tree-preorder-traversal
Binary Tree Preorder Traversal
binary-tree leetcode preorder-traversal problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/factorial-trailing-zeroes
Find number of trailing zeroes in factorial of a number
factorial leetcode maths maths-problem problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/course-schedule
Course Schedule
bfs dfs kosaraju-algorithm leetcode problem-solving strongly-connected-components topological-sort
Last synced: 28 Mar 2025
https://github.com/emahtab/flipping-an-image
Flipping an image
array leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/evaluate-reverse-polish-notation
Evaluate Reverse Polish Expression
leetcode problem-solving reverse-polish-notation stack
Last synced: 19 Jun 2025
https://github.com/emahtab/course-schedule-iv
floyd-warshall-algorithm graph leetcode
Last synced: 28 Mar 2025
https://github.com/emahtab/container-with-most-water
Container with most water problem
container-with-most-water leetcode leetcode-java problem-solving two-pointers
Last synced: 28 Mar 2025
https://github.com/brunociccarino/leetcode
🚀 All my leetcode troubleshooting
array arrays arrays-and-strings binary-search leetcode leetcode-c leetcode-solutions math string string-manipulation strings two-pointers
Last synced: 02 Feb 2025
https://github.com/emahtab/binary-tree-vertical-order-traversal
Binary Tree Vertical Order Traversal
bfs binary-tree-traversal leetcode problem-solving vertical-order-traversal
Last synced: 28 Mar 2025
https://github.com/emahtab/binary-tree-zigzag-level-order-traversal
Binary Tree Zigzag (Spiral) Order Traversal
bfs binary-tree leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/justin-pyne/coding-problems
A collection of my LeetCode solutions for Python data structure/algorithm problems and SQL problems, organized by language.
algorithms leetcode leetcode-solutions python sql
Last synced: 22 Feb 2025
https://github.com/marcode24/coding-challenges
🎯 This repository contains a collection of challenges that I have solved in the past using javascript and jest for testing
coderbyte codewars codewars-challenges codewars-javascript codewars-kata codewars-solutions coding-challenges eslint github-actions husky interview-questions javascript jest katas leetcode leetcode-javascript leetcode-solutions lint-staged questions test
Last synced: 29 Mar 2025
https://github.com/emahtab/climbing-stairs
Climbing Stairs
climbing-stairs dynamic-programming leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/binary-tree-pruning
Binary Tree Pruning
binary-tree leetcode problem-solving pruning
Last synced: 14 Jun 2025
https://github.com/emahtab/clone-a-graph
Clone a Graph
breadth-first-search clone graph leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/binary-tree-level-order-traversal-ii
Binary Tree Level Order Traversal
bfs binary-tree binary-tree-traversal leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/convert-sorted-array-to-binary-search-tree
Convert Sorted Array to Height Balanced Binary Search Tree
binary-search-tree leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/best-time-to-buy-and-sell-stock
Find the max profit buying and selling stock with at most one transaction.
buy-and-sell leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/battleships-in-a-board
Count the total Battleships in a board
dfs graph leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/binary-tree-inorder-traversal
Binary Tree Inorder Traversal
binary-tree inorder-traversal leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/best-time-to-buy-and-sell-stock-ii
Find the max profit buying and selling stock with unlimited number of transactions.
buy-and-sell leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/closest-binary-search-tree-value
Closest Binary Search Tree Value
binary-search-tree leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/add-two-numbers
Add two linked lists nodes
leetcode linked-list problem-solving
Last synced: 12 Jul 2025
https://github.com/emahtab/copy-list-with-random-pointer
Copy a Linked List with Random Pointer
clone leetcode linked-list problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/cousins-in-binary-tree
Check whether given two nodes are cousins in a binary tree
binary-tree dfs leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/delete-nodes-and-return-forest
depth-first-search forest leetcode
Last synced: 28 Mar 2025
https://github.com/emahtab/count-square-submatrices-with-all-ones
Count square submatrices with all ones
dynamic-programming leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/check-completeness-of-a-binary-tree
Checking whether a binary tree is Complete binary tree or not
bfs complete-binary-tree leetcode problem
Last synced: 28 Mar 2025
https://github.com/emahtab/decode-ways
Number of ways to decode
dynamic-programming leetcode problem-solving
Last synced: 28 Mar 2025
https://github.com/emahtab/count-complete-tree-nodes
Count total nodes in a Complete Binary Tree
complete-binary-tree leetcode problem-solving
Last synced: 28 Mar 2025