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808 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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TitleDifficultyVideosCompanies
Assign Mice To Holeseasy-
amazon
Bartender Drink Optimizationmedium-
amazon
Break a string into lines of length k without breaking wordsmedium-
amazon
Busiest period in a buildingeasy-
amazon
Count the number of elements from one array less than or equal to elements in another arraymedium-
amazon
Design a data structure for generic deck of cardsmedium-
googleamazon
Design log Order recordseasy-
twitteramazon
Equal Average Partitionmedium-
amazon
External Sorting of integersmedium-
amazon
Find GCD of n numberseasy-
amazon
Find if there is a path between two vertices in a directed grapheasy-
googlefacebookamazon
Find the Index of the First Occurrence in a Stringeasy-
adobeamazonapple
Divide Two Integersmedium-
adobeamazonapple
First Unique Character in a Stream of Charactersmedium-
amazongooglemicrosoft
Huffman Tree Character Encodingeasy-
amazon
Implement a bit arraymedium-
amazon
Implement stack using priority queueeasy-
adobemicrosoftamazon
Two Sumeasy
adobeaetionaffirm
Add Two Numbers represented as Linked List in Reversed Ordermedium-
adobeaetionairbnb
Longest Substring Without Repeating Charactersmedium
adobealationalibaba
Median of Two Sorted Arrayshard-
adobeairbnbalibaba
Longest Palindromic Substringmedium
adobeairbnbalibaba
Reverse Integermedium-
adobeamazonapple
Convert String to Integer atoimedium-
adobeamazonapple
Palindrome Numbereasy
adobeamazonapple
Regular Expression Matchinghard-
adobeairbnbalibaba
Container With Most Watermedium
adobeamazonapple
Integer To Romanmedium-
adobeamazonapple
Roman To Integereasy
adobeamazonapple
Longest Common Prefix in array of stringeasy-
adobealibabaamazon
3Sum0 - Find three elements in an array that sum to a zeromedium
adobeakuna-capitalalibaba
3Sum - Closestmedium-
adobeamazonapple
Letter Combinations of a Phone Numbermedium-
amazonappleatlassian
4Summedium-
adobeamazonapple
Remove Nth Node From End of Listmedium
adobeamazonapple
Valid Parentheseseasy
adobeairbnbakuna-capital
Merge Two Sorted Linked Listseasy
adobeairbnbalibaba
Generate Parenthesesmedium-
adobealibabaamazon
Lowest Common Ancestor for a n-ary Treemedium-
amazon
Maximum consecutive repeating character in stringmedium-
amazon
Merge K Sorted Listshard
adobeairbnbalibaba
Minimize Maximum Mouse Distance to Holeseasy-
amazon
Number of Overlapping Lines between points on 2 parallel lineseasy-
amazonfacebook
Product Sales Analysis Ieasy-
amazon
Redundant Braceseasy-
amazon
Run-length Encodingeasy-
amazon
Smallest positive integer that cannot be represented as the sum of a subset of a sorted arrayeasy-
amazon
Stable Marriage Problemhard-
amazon
Stack of platesmedium-
microsoftamazon
Swap Nodes in Pairsmedium-
adobeamazonapple
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