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91 problems total

Array (1905)Sorting (440)Depth First Search (316)Database (301)Breadth First Search (241)Tree (240)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)
All Topics(4301)Algorithms(3944)Database(305)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)

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Autocomplete Suggestion Systemmedium-
twitter
Design log Order recordseasy-
twitteramazon
Dodgeball Team Divisionhard-
twitter
Two Sumeasy
adobeaetionaffirm
Regular Expression Matchinghard-
adobeairbnbalibaba
Integer To Romanmedium-
adobeamazonapple
Valid Parentheseseasy
adobeairbnbakuna-capital
Merge K Sorted Listshard
adobeairbnbalibaba
Permutation of Array using given ordereasy-
twitter
Valid Sudokumedium-
adobeamazonapple
Trapping Rain Waterhard-
adobeaffirmairbnb
Multiply Stringsmedium-
amazonappleexpedia
Wildcard Matchinghard-
adobeamazonbloomberg
Merge Overlapping Intervalsmedium
adobealibabaamazon
Insert Intervalmedium
adobeamazonapple
Kth Permutation Sequence of Numbers 1 to Nhard-
amazonapplefacebook
Text Justificationhard-
airbnbamazonapple
Minimum Window Substringhard
adobeairbnbamazon
Largest Rectangle in Histogramhard-
adobeamazonbloomberg
Decode Waysmedium
adobeamazonapple
Symmetric Binary Treeeasy-
adobealibabaamazon
Construct Binary Tree from Inorder and Preorder Traversalmedium
adobeamazonapple
Construct Binary Tree from Inorder and Postorder Traversalmedium-
amazonbloombergfacebook
Pascal’s Triangle 1 - Generate first n rowseasy-
adobeamazonapple
Binary Tree Path Sum - Maximum between any two nodeshard
adobeamazonappdynamics
Clone Undirected Graphmedium
amazonapplefacebook
Word Break 1 - Check if word is breakablemedium
adobeamazonapple
Word Break 2 - Construct a sentencehard
amazonappleaudible
Design LRU Cachemedium-
adobealibabaamazon
Maximum Points on a Linehard-
amazonapplebloomberg
Friend Words - One Edit Distancemedium-
amazonfacebookgoogle
Majority Element - Boyer–Moore majority vote algorithmeasy-
adobeamazonapple
Largest Number From Given Numbersmedium
amazonapplebytedance
Number of Islandsmedium
adobeaffirmalibaba
Happy Numbereasy-
adobeairbnbamazon
Reverse Linked Listeasy
adobealibabaamazon
Implement Triemedium
amazonapplebloomberg
Course Schedule 2 - Get Ordered Coursesmedium-
airbnbamazonapple
Skyline Problemhard-
adobeamazonapple
Lowest Common Ancestor of a Binary Search Treemedium
adobeamazonbloomberg
Sliding Window Maximumhard-
adobealibabaamazon
Strobogrammatic Number 2 - Generate for length nmedium-
ciscofacebookgoogle
Flatten 2D Vectormedium-
airbnbapplefacebook
Paint House 1 - N houses with 3 colors with no two adjacent houses with same color colormedium-
applelinkedinmicrosoft
Alien Dictionaryhard-
airbnbamazonapple
Encode and Decode Stringsmedium
bloomberggooglemicrosoft
Find Median from Data Streamhard
adobeamazonapple
Best Meeting Pointhard-
amazonfacebookgoogle
Range Sum Query – Mutablemedium-
amazonfacebookgoogle
Number of Connected Components in an Undirected Graphmedium-
amazonfacebookgoogle
Showing 1 to 50 of 91 results
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