TitleDifficultyCompaniesVideos
Palindrome Number ProblemEasyadobe amazon apple bloomberg facebook google hcl jpmorgan microsoft oracle yahoo
Custom Sort String ProblemMediumamazon facebook google uber
Friend Words - One Edit DistanceMediumamazon facebook google microsoft snapchat twitter uber
Longest Duplicate Substring ProblemHardamazon apple google microsoft oracle
Split Message Based on Limit ProblemHardamazon uber
Balanced Binary Tree ProblemEasyadobe amazon apple bloomberg bytedance cisco facebook google microsoft
Best Time To Buy And Sell Stock With CooldownMediumamazon apple facebook google
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
Create Maximum Number ProblemHardamazon google
Different Ways to Add Parentheses ProblemMediumamazon cisco citadel facebook google
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
Find the Closest Palindrome ProblemHardamazon facebook google microsoft nutanix pinterest uber yelp
First Unique Character in a Stream of CharactersMediumamazon google microsoft
Generate Nth Fibonacci NumberEasyamazon apple barclays facebook mathworks microsoft sap yahoo
Gray CodeMediumamazon microsoft apple
Largest Rectangle in Histogram ProblemHardadobe amazon bloomberg facebook flipkart google microsoft twitter
Least Number of Perfect Squares that Sums to nMediumadobe amazon apple cisco ebay facebook godaddy google grammarly linkedin lyft microsoft uber yandex
Longest Palindrome ProblemEasyamazon google intuit
Maximum consecutive repeating character in stringamazon
Maximum GapMediumamazon
Maximum Size Subarray Sum equals KMediumamazon facebook google microsoft palantir-technologies
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
My Calendar 2 ProblemMediumamazon google
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
Partition List ProblemMediumamazon apple microsoft
Partition to K Equal Sum Subsets ProblemMediumamazon bytedance ebay facebook google houzz linkedin microsoft pinterest vmware
Pascal’s Triangle 2 - Return nth rowEasyamazon goldman-sachs google oracle qualtrics
Peeking IteratorMediumamazon apple atlassian ebay facebook google microsoft oracle yahoo
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 2Mediumamazon microsoft uber vmware google
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
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