TitleDifficultyCompaniesVideos
Prune Unary nodes to form Full Binary TreeMediumyahoo
Egyptian FractionEasypalantir
External Sorting of integersMediumamazon
Three-Word Additive Cryptarithmetic SolverMediumgoogle
Check if words chain to form a circleMediumdropbox
Infinite Prime GeneratorMedium
Maximum of Two Numbers Without ConditionalsHardnvidia
Maximum Weight Spanning TreeHardmicrosoft
Minimum and Maximum in an array with Optimal ComparisonsMediumfacebook
Point in PolygonMediumnvidia
Symmetric N-ary Tree DetectionEasyamazon
Blackjack Optimal Strategy with Known Card SequenceHardMIT
Custom Sort StringMediumamazon facebook google uber
Find All Conflicting AppointmentsEasy
Maximum flow and bipartite matchingHard
Remove a vertex and all connected edges from a graphEasy
Minimum Insertion OR Deletion Steps to Make a String PalindromeMedium
Minimum Deletion Steps to Make a String PalindromeMedium
Closest Equal Element QueriesMedium
Check If Digits Are Equal in String After Operations IEasy
Check If Digits Are Equal in String After Operations IIHard
Choose K Elements With Maximum SumMedium
Concatenated DivisibilityHard
Count Beautiful NumbersHard
Count Beautiful Splits in an ArrayMedium
Count Cells in Overlapping Horizontal and Vertical SubstringsMedium
Count Connected Components in LCM GraphHard
Count Covered BuildingsMedium
Count Mentions Per UserMedium
Count Non-Decreasing Subarrays After K OperationsHard
Count Numbers with Non-Decreasing DigitsHard
Count Partitions with Even Sum DifferenceEasy
Count Paths With the Given XOR ValueMedium
Count Special SubsequencesMedium
Count Substrings Divisible By Last DigitHard
Design SpreadsheetMedium
Design Task ManagerMedium
Digit Operations to Make Two Integers EqualMedium
DNA Pattern RecognitionMedium
Eat Pizzas!Medium
Equal Sum Grid Partition IMedium
Equal Sum Grid Partition IIHard
Fill a Special GridMedium
Find Closest PersonEasy
Find Followers CountEasy
Find Invalid IP AddressesHard
Find Minimum Cost to Remove Array ElementsMedium
Find Mirror Score of a StringMedium
Find Most Frequent Vowel and ConsonantEasy
Find Product Recommendation PairsMedium