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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 K DigitsMediumadobe amazon bloomberg bytedance didi facebook google microsoft nutanix oracle snapchat vmware
Remove Outermost ParenthesesEasyapple facebook google
Reverse BitsEasyairbnb amazon apple facebook google samsung tencent
Reverse Words in a String 2Mediumamazon google microsoft uber vmware
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
Search in Rotated Sorted Array 2 - Check if number exists - Duplicates allowedMediumadobe amazon bloomberg facebook google microsoft
Select Copy Paste 1 - Minimum operationsMediumbloomberg microsoft
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
Shortest Palindrome 1 - Prepending charactersHardadobe amazon bloomberg facebook google microsoft oracle pocket-gems
Smallest K-Length Subsequence With Occurrences of a LetterHard
Sort Characters By FrequencyMediumamazon bloomberg expedia facebook google linkedin uber twitter
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
Strobogrammatic Number 1 - Check if strobogrammaticEasycisco facebook google
Strobogrammatic Number 2 - Generate for length nMediumcisco facebook google twitter
Strobogrammatic Number 3 - Count in RangeHardfacebook google
Student Attendance Record 1Easygoogle
Student Attendance Record 2Hardgoogle uber
Subset Sum 1 - Is there a subset?Medium
Sudoku SolverHardadobe amazon apple arista-networks doordash dropbox expedia facebook google microsoft oracle riot-games roblox snapchat uber vmware wish
Sum of Beauty of All SubstringsMedium
Surrounded RegionsMediumamazon ebay facebook google splunk uber
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 Parenthesis StringMediumalibaba amazon bloomberg facebook google
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
Validate IP AddressMediumamazon cisco facebook google microsoft twitter uber
Convex PolygonMediumgoogle
Encode String with Shortest LengthHardgoogle
Generate Random Point in a CircleMediumfacebook leap-motion
Heaters ProblemMediumamazon google
Implement Rand10() Using Rand7()Mediumapple bloomberg bytedance linkedin microsoft
Largest Palindrome ProductHardapple yahoo
Magical StringMediumgoogle
Sliding Window MedianHardamazon apple facebook google microsoft snapchat spotify
Inorder Successor in Binary TreeMedium
Sum of Absolute Differences in a Sorted ArrayMedium
Shortest Path in a Grid with Obstacles EliminationHarddidi google
Permutation in StringMediumamazon bloomberg facebook google lyft microsoft uber yahoo yandex
Can Make Arithmetic Progression From SequenceEasyamazon