TitleDifficultyCompaniesVideos
Range Sum Query - ImmutableEasyamazon bloomberg facebook google microsoft palantir-technologies goldman-sachs
Interval List IntersectionsMediumamazon apple bloomberg cruise-automation doordash facebook google oracle pinterest snapchat uber
Sentence Similarity 2 - with transitive word pairsMediumamazon bloomberg google
Filling Bookcase Shelves ProblemMediumbloomberg google
Max Stack ProblemHardamazon bloomberg facebook google linkedin lyft microsoft pure-storage snapchat twitter
Find Common Characters ProblemEasyadobe amazon apple bloomberg tripadvisor
Minimum Cost to Hire K Workers ProblemHardbloomberg google
Permutations of Array 2 - Array has duplicatesMediumadobe amazon apple bloomberg facebook linkedin microsoft uber vmware
Implement Power Function 1Mediumadobe amazon apple asana bloomberg ebay facebook goldman-sachs google linkedin microsoft morgan-stanley oracle uber vmware
Missing Number ProblemEasyadobe amazon apple arista-networks bloomberg facebook google ibm microsoft oracle servicenow vmware zillow
Reverse Integer ProblemMediumadobe amazon apple barclays bloomberg cisco facebook google jpmorgan lyft microsoft netease oracle uber yahoo
Palindrome Number ProblemEasyadobe amazon apple bloomberg facebook google hcl jpmorgan microsoft oracle yahoo
Balanced Binary Tree ProblemEasyadobe amazon apple bloomberg bytedance cisco facebook google microsoft
Binary Tree Path Sum - Maximum Sum between any nodesHardadobe amazon appdynamics apple baidu bloomberg bytedance facebook google intuit microsoft twitter uber vmware
Binary Tree Traversal - Zigzag Level Order TraversalMediumamazon apple bloomberg bytedance ebay facebook google linkedin microsoft oracle qualtrics samsung servicenow yahoo
Construct Binary Tree from Inorder and Postorder TraversalMediumamazon bloomberg facebook google mathworks microsoft twitter
Construct Binary Tree from Inorder and Preorder TraversalMediumadobe amazon apple bloomberg bytedance citadel facebook google microsoft oracle square twitter yahoo
Contains Duplicate 2 - within k distanceEasyadobe airbnb amazon apple bloomberg google microsoft palantir-technologies
Convert Sorted List into a height-balanced Binary search TreeMediumamazon bloomberg facebook google lyft microsoft oracle vmware zenefits
Count of Smaller Numbers After Self ProblemHardadobe amazon apple bloomberg facebook google microsoft oracle uber
Count PrimesMediumadobe amazon apple bloomberg capital-one ebay facebook goldman-sachs google intel microsoft oracle yahoo yandex
Find Median from Data StreamHardadobe amazon apple atlassian bloomberg bytedance citadel ebay expedia facebook goldman-sachs google microsoft netflix oracle pinterest qualtrics salesforce snapchat twitter uber vmware yahoo
Find Peak Element in a Given ArrayMediumamazon apple bloomberg bytedance facebook google ixl lyft microsoft quora uber vmware yahoo
Largest Rectangle in Histogram ProblemHardadobe amazon bloomberg facebook flipkart google microsoft twitter
Maximum Number of Occurrences of a Substring ProblemMediumbloomberg paypal roblox
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
Minimum Insertion Steps to Make a String Palindrome ProblemHardbloomberg google quora
Nim GameEasyadobe bloomberg
Odd Even Linked List - Bring odd nodes first and even laterMediumamazon bloomberg capital-one ebay facebook google microsoft
Palindrome Pairs ProblemHardairbnb amazon apple bloomberg facebook google square uber
Populate next pointer to right node in Binary TreeMediumamazon bloomberg facebook google microsoft oracle
Reconstruct Itinerary ProblemHardamazon apple bloomberg citadel facebook goldman-sachs google microsoft qualtrics snapchat square twilio uber yandex yelp
Remove Invalid Parentheses ProblemHardamazon apple bloomberg facebook google houzz ponyai postmates uber
Remove K Digits ProblemMediumadobe amazon bloomberg bytedance didi facebook google microsoft nutanix oracle snapchat 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
Search in Rotated Sorted Array 2 - Check if number exists - Duplicates allowedMediumadobe amazon bloomberg facebook google microsoft
Select Copy Paste Problem 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
Sort Characters By Frequency ProblemMediumamazon bloomberg expedia facebook google linkedin uber
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
Swap Nodes in PairsMediumadobe amazon apple bloomberg ebay facebook google lyft microsoft oracle sap uber
Valid Parenthesis StringMediumalibaba amazon bloomberg facebook google
Valid Sudoku ProblemMediumadobe amazon apple bloomberg cruise-automation doordash facebook google microsoft oracle pinterest roblox salesforce snapchat twitter uber vmware
Validate Binary Search Tree ProblemMediumadobe 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
Implement Rand10() Using Rand7()Mediumapple bloomberg bytedance linkedin microsoft
Permutation in String ProblemMediumamazon bloomberg facebook google lyft microsoft uber yahoo yandex