PrepCode

Combinatorics

51 problems

Algorithms pattern questions across top companies

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Showing 51 questions
#920Number of Music PlaylistsHardmathWalkCCCCourseraGoogleOracle
#1359Count All Valid Pickup and Delivery OptionsHardmathWalkCCCAckoDoorDash
#2539Count the Number of Good SubsequencesMediumhash tableWalkCCCNvidiaTuSimpleUKG
#2954Count the Number of Infection SequencesHardarrayWalkCCCMetaMicrosoftOracle
#3128Right TrianglesMediumarrayWalkCCCMitsogo
#3405Count the Number of Arrays with K Matching Adjacent ElementsHardmathWalkCCCAmazonBloombergGoogle
#3426Manhattan Distances of All Arrangements of PiecesHardmathWalkCCCAmazonGoogleRubrik
#1830Minimum Number of Operations to Make String SortedHardhash tableWalkCCCSamsung
#2930Number of Strings Which Can Be Rearranged to Contain SubstringMediummathWalkCCCMeesho
#3953Maximum Score with Co-Prime ElementHardarrayWalkCCCAtlassianServiceNow
#2514Count AnagramsHardhash tableWalkCCCAmazonMathWorks
#1201Ugly Number IIIMediummathWalkCCCAmazonAmerican Express
#634Find the Derangement of An ArrayMediummathWalkCCCIXL
#1916Count Ways to Build Rooms in an Ant ColonyHardarrayWalkCCCAdobe
#2927Distribute Candies Among Children IIIHardmathWalkCCCAmazonRubrik
#2928Distribute Candies Among Children IEasymathWalkCCCAmazonRubrik
#2929Distribute Candies Among Children IIMediummathWalkCCCAmazonGoogleMeta
#3179Find the N-th Value After K SecondsMediumarrayWalkCCCWalmart Labs
#62Unique PathsMediummathNeetCodeAkamaiAmazonBloomberg
#4002Count Valid SequencesMediummathWalkCCCDE ShawGoogle
#2338Count the Number of Ideal ArraysHardmathWalkCCCAmazonGoogleInfosys
#2597The Number of Beautiful SubsetsMediumarrayWalkCCCAmazonBloombergInfosys
#1863Sum of All Subset XOR TotalsEasyarrayNeetCodeAdobeAmazonBloomberg
#2221Find Triangular Sum of an ArrayMediumarrayWalkCCCAmazonDE ShawGoogle
#2912Number of Ways to Reach Destination in the GridHardmathWalkCCCUber
#1569Number of Ways to Reorder Array to Get Same BSTHardarrayWalkCCCBloombergGoogle
#3539Find Sum of Array Product of Magical SequencesHardarrayWalkCCCInfosysMeta
#3518Smallest Palindromic Rearrangement IIHardhash tableWalkCCCGoogleMeta
#3461Check If Digits Are Equal in String After Operations IEasymathWalkCCCAmazonGoogleMeta
#3312Sorted GCD Pair QueriesHardarrayWalkCCCAmazonBloombergGoogle
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