PremiumSliding WindowMedium

Permutation in String

Asked at:AmazonGoogleMicrosoft

This problem teaches the Sliding Window pattern, one of the most frequently tested techniques in technical interviews at top companies.

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Patterns covered

Hash MapSetFrequency MapTwo PointersSliding WindowStackBinary SearchLinked ListKadane's AlgorithmTree TraversalTracking MinimumPrefix SumDynamic ProgrammingIntervalsMonotonic StackHeap / Priority QueueGraph TraversalBacktracking

Already doing the free problems? This picks up right where they leave off. Same format, harder patterns, the ones that show up in every FAANG-style screen.

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