All Problems

29 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)

Filter by Difficulty:

EasyMediumHard

Tag:

Company:

Active filters:Difficulty: hard×Company: oracle×
TitleDifficultyVideosCompanies
Chess King Check Detectorhard-
Oracle
Median of Two Sorted Arrayshard-
adobeairbnbalibaba
Regular Expression Matchinghard-
adobeairbnbalibaba
Merge K Sorted Listshard
adobeairbnbalibaba
Smallest sparse number greater than or equal to Nhard-
oracle
Longest Valid Parentheseshard-
adobeamazonapple
Sudoku Solverhard-
adobeamazonapple
First Missing Positivehard-
adobeamazonapple
Trapping Rain Waterhard-
adobeaffirmairbnb
Wildcard Matchinghard-
adobeamazonbloomberg
N-Queenshard-
adobeamazonapple
Minimum Window Substringhard
adobeairbnbamazon
Word Ladder 2 - Get all the laddershard-
amazonapplebloomberg
Word Ladder 1 - Get Ladder Lengthhard-
affirmamazonapple
Word Break 2 - Construct a sentencehard
amazonappleaudible
Word Search 2 - Return All Wordshard
airbnbamazonapple
Shortest Palindrome 1 - Prepending charactershard-
adobeamazonbloomberg
Sliding Window Maximumhard-
adobealibabaamazon
Integer to English Wordshard
amazonapplebarclays
Find Median from Data Streamhard
adobeamazonapple
Serialize and Deserialize Binary Treehard
amazonapplebloomberg
Number of Islands IIhard-
amazonfacebookgoogle
Count of Smaller Numbers After Selfhard-
adobeamazonapple
Data Stream as Disjoint Intervalshard-
amazonfacebookgoogle
Frog Jumphard-
amazonapplebytedance
Word Squareshard-
googleoracle
Range Modulehard-
amazoncoupanggoogle
Cherry Pickuphard-
adobeakuna-capitalamazon
Longest Duplicate Substring Problemhard-
amazonapplegoogle