All TopicsAlgorithmsBackend
DesignConcurrencyDatabaseDatabase
DesignJavaJavascriptObject Oriented
DesignProgramming
LanguageShell
TitleDifficultyCompaniesVideos
Least Number of Perfect Squares that Sums to nMediumadobe amazon apple cisco ebay facebook godaddy google grammarly linkedin lyft microsoft uber yandex
Merge K Sorted ListsHardadobe airbnb alibaba amazon apple atlassian audible bloomberg box bytedance cisco cohesity cruise-automation ebay facebook goldman-sachs google indeed ixl linkedin lyft mathworks microsoft nvidia oracle salesforce sap tableau twitter uber vmware wish yahoo yandex zillow
Palindrome PairsHardairbnb amazon apple bloomberg facebook google square uber
Palindrome Partitioning IIIHardapple uber
Palindrome PermutationEasyamazon apple bloomberg facebook google microsoft uber
Partition ListMediumamazon apple linkedin microsoft
Peeking IteratorMediumamazon apple atlassian ebay facebook google microsoft oracle yahoo
Range Sum Query 2D - ImmutableMediumamazon apple cruise-automation facebook google houzz lyft microsoft vmware
Reconstruct ItineraryHardamazon apple bloomberg citadel facebook goldman-sachs google microsoft qualtrics snapchat square twilio uber yandex yelp
Rectangle Area - Total area of two rectanglesMediumapple facebook microsoft nvidia juniper
Remove Invalid Parentheses ProblemHardamazon apple bloomberg facebook google houzz ponyai postmates uber
Remove Outermost ParenthesesEasyapple facebook google
Reverse BitsEasyairbnb amazon apple facebook google samsung tencent
Reverse Words in a String 3Easyamazon apple bloomberg microsoft paypal salesforce snapchat yahoo zappos
Rotate n x n matrix by 90 degreesMediumadobe akuna-capital amazon apple bloomberg cisco facebook google groupon houzz lyft microsoft nvidia palantir palantir-technologies quora salesforce uber wish yandex
Scramble StringHardapple google
Serialize and Deserialize Binary TreeHardamazon apple bloomberg citadel ebay expedia facebook google groupon indeed linkedin microsoft oracle qualtrics quora salesforce snapchat tableau uber vmware yahoo
Spiral Matrix 1 - ReturnMediumadobe amazon apple bloomberg bytedance cisco drawbridge ebay epic-systems facebook goldman-sachs google hulu linkedin microsoft oracle paypal quip robinhood snapchat uber visa
Square root of an integerEasyamazon apple bloomberg facebook google huawei linkedin lyft microsoft qualtrics uber wayfair
Sudoku SolverHardadobe amazon apple arista-networks doordash dropbox expedia facebook google microsoft oracle riot-games roblox snapchat uber vmware wish
Swap Nodes in PairsMediumadobe amazon apple bloomberg ebay facebook google lyft microsoft oracle sap uber
Unique BSTs 2 - GenerateMediumadobe amazon apple facebook microsoft yahoo
Valid NumberHardadobe amazon apple facebook google linkedin microsoft tripadvisor
Valid SudokuMediumadobe amazon apple bloomberg cruise-automation doordash facebook google microsoft oracle pinterest roblox salesforce snapchat twitter uber vmware
Validate Binary Search TreeMediumadobe amazon apple asana atlassian bloomberg bytedance capital-one ebay facebook goldman-sachs google linkedin mathworks microsoft oracle salesforce sap tripadvisor uber visa vmware yahoo yandex
Word Break 2 - Construct a sentenceHardamazon apple audible bloomberg bookingcom dropbox ebay facebook google microsoft oracle pinterest snapchat twitter uber zillow
Zigzag IteratorMediumamazon apple cruise-automation facebook google microsoft yandex
Implement Rand10() Using Rand7()Mediumapple bloomberg bytedance linkedin microsoft
Largest Palindrome ProductHardapple yahoo
Sliding Window MedianHardamazon apple facebook google microsoft snapchat spotify
Find in Mountain ArrayHardapple google
Most Common WordEasyamazon apple google microsoft oracle
Max Area of IslandMediumadobe affirm amazon apple bloomberg bytedance cruise-automation doordash facebook google intuit mathworks microsoft oracle palantir-technologies qualtrics twitch uber wish zillow
Find and Replace PatternMediumamazon apple google
Sum of Subarray MinimumsMediumapple hulu microsoft
Subarray Sum Equals KMediumadobe amazon apple bloomberg ebay expedia facebook goldman-sachs google indeed linkedin microsoft oracle quora snapchat twilio uber wish yahoo yandex
Possible BipartitionMediumapple facebook google microsoft
Snapshot ArrayMediumamazon apple ebay facebook google snapchat uber
Island PerimeterEasyamazon apple bloomberg facebook google microsoft
Find All Duplicates in an ArrayMediumamazon apple bloomberg facebook google lyft microsoft pocket-gems
Flatten a Multilevel Doubly Linked ListMediumamazon apple bloomberg facebook google microsoft uber
Add StringsEasyadobe airbnb amazon apple bloomberg bytedance facebook google microsoft nvidia oracle snapchat square
Trapping Rain Water 2Hardamazon apple bytedance facebook google microsoft twitter
Binary WatchEasyapple google
Daily TemperaturesMediumadobe amazon apple bloomberg cisco expedia facebook goldman-sachs google linkedin microsoft nvidia uber zillow
Maximum Subarray SumMediumadobe alibaba amazon apple asana atlassian bloomberg bytedance capital-one cisco citadel ebay expedia facebook goldman-sachs google ibm intel jpmorgan linkedin microsoft morgan-stanley nvidia oracle palantir-technologies paypal qualcomm salesforce sap two-sigma uber visa wayfair yahoo zillow
Find the Index of the First Occurrence in a StringEasyadobe amazon apple bloomberg citadel dropbox ebay facebook google microsoft oracle paypal pocket-gems vmware yahoo yandex
Time Based Key-Value StoreMediumamazon apple atlassian databricks facebook flexport google linkedin lyft microsoft netflix oracle square stripe sumologic twitter uber vmware zillow
Sparse Matrix MultiplicationMediumamazon apple bloomberg facebook google linkedin microsoft snapchat uber
Find Duplicate File in SystemMediumamazon apple dropbox facebook google microsoft oracle vmware