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: 2025-10-17 00:17:37 UTC
JSON Representation

https://github.com/emahtab/coin-change-2

Coin Change Problem (Total number of ways to make change) Implementation

coin-change dynamic-programming leetcode

Last synced: 28 Mar 2025

https://github.com/emahtab/water-area

Water Area Problem

leetcode problem-solving water-area water-trapping

Last synced: 28 Mar 2025

https://github.com/emahtab/campus-bikes

Assign closest bike to each worker

leetcode priority-queue

Last synced: 28 Mar 2025

https://github.com/emahtab/remove-nth-node-from-end-of-list

Remove nth node from end of the linked list

leetcode linked-list problem-solving

Last synced: 24 Jun 2025

https://github.com/totalo/algo

alogrithms leetcode

Last synced: 26 Feb 2025

https://github.com/emahtab/sliding-window-maximum

Find Max within a fixed size window

leetcode monotonic-queue sliding-window

Last synced: 24 Jun 2025

https://github.com/amri-tah/leetcode-solutions-java

Collection of Leetcode problems solved by me using Java

coding leetcode leetcode-solutions

Last synced: 24 Jun 2025

https://github.com/eugenechevski/problem-solving

Data-structure and algorithms interview problems and solutions.

algorithm algorithms javascript leetcode python typescript

Last synced: 22 Feb 2025

https://github.com/1337fury/problem_solving

My personal solutions to LeetCode problems. This repository contains my code submissions for various LeetCode challenges, organized by difficulty levels

coding-challenges leetcode problem-solving

Last synced: 25 Jun 2025

https://github.com/emahtab/maximum-units-on-a-truck

leetcode priority-queue

Last synced: 28 Mar 2025

https://github.com/emahtab/lru-cache

LRU Cache

doubly-linked-list hashmap leetcode lru-cache

Last synced: 28 Mar 2025

https://github.com/emahtab/jump-game

Jump Game

jump-game leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/is-graph-bipartite

bipartite-graph breadth-first-search leetcode

Last synced: 28 Mar 2025

https://github.com/emahtab/kth-smallest-element-in-a-bst

kth Smallest element in a BST

binary-search-tree leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/inorder-successor-in-bst

Inorder Successor in BST

binary-search-tree inorder-successor leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/implement-stack-using-queues

Implement Stack using Queues

leetcode problem-solving queue stack

Last synced: 28 Mar 2025

https://github.com/emahtab/construct-binary-tree-from-preorder-and-postorder-traversal

Construct Binary Tree from Preorder and Postorder Traversal

binary-tree binary-tree-construction leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/connecting-cities-with-minimum-cost

Minimum Spanning Tree

graph kruskals-algorithm leetcode minimum-spanning-tree prims-algorithm

Last synced: 28 Mar 2025

https://github.com/emahtab/combination-sum-ii

backtracking combinations leetcode

Last synced: 28 Mar 2025

https://github.com/emahtab/unique-paths-ii

dynamic-programming leetcode

Last synced: 28 Mar 2025

https://github.com/emahtab/combination-sum

backtracking combinations leetcode

Last synced: 28 Mar 2025

https://github.com/emahtab/top-k-frequent-words

leetcode problem-solving top-k-words treemap

Last synced: 28 Mar 2025

https://github.com/emahtab/top-k-frequent-elements

Find top k frequent elements

leetcode problem-solving top-k treemap

Last synced: 28 Mar 2025

https://github.com/emahtab/validate-a-binary-search-tree

Validate a Binary Search Tree

binary-search-tree inorder-traversal leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/regular-expression-matching

Regular Expression Matching

leetcode problem-solving recursion regular-expression

Last synced: 28 Mar 2025

https://github.com/emahtab/search-2d-matrix-ii

Search 2D Matrix sorted row and column wise

leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/populating-next-right-pointers-in-each-node

breadth-first-search leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/meeting-rooms

Meeting Rooms

interval leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/maximal-square

Find the maximal square area

dynamic-programming leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/making-a-large-island

depth-first-search leetcode

Last synced: 28 Mar 2025

https://github.com/emahtab/longest-increasing-subsequence

Longest Increasing Subsequence

dynamic-programming leetcode longest-increasing-subsequence problem-solving

Last synced: 14 Jul 2025

https://github.com/emahtab/intersection-of-two-arrays-ii

Find the elements which intersect

hashmap leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/print-in-order

concurrency java leetcode semaphore

Last synced: 28 Mar 2025

https://github.com/emahtab/range-sum-of-bst

Range Sum of BST

binary-search-tree leetcode problem-solving

Last synced: 28 Mar 2025

https://github.com/emahtab/coin-change

coin-change dynamic-programming leetcode

Last synced: 28 Mar 2025

https://github.com/emahtab/alien-dictionary

Find the order of alphabets in an alien dictionary

graph leetcode problem-solving topological-sort

Last synced: 28 Mar 2025

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/single-number

Single Number

hashset leetcode problem-solving xor

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/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: 16 Oct 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/remove-duplicates-from-sorted-array

Remove Duplicated from Sorted Array

leetcode problem-solving remove-duplicates

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/reconstruct-itinerary

euler-path graph leetcode

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/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/number-of-connected-components-in-an-undirected-graph

breadth-first-search connected-components depth-first-search disjoint-set leetcode union-find

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/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/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/longest-increasing-path-in-a-matrix

depth-first-search dfs dynamic-programming leetcode memoization problem-solving

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

heap leetcode problem-solving

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/emahtab/random-pick-index

Random pick index

constant-space leetcode problem-solving random

Last synced: 12 Sep 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