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Database57 Array37 String20 Hash Table17 Math11 Sorting9 Two Pointers6 Binary Search5 Counting4 Design4 Linked List4 Simulation4 Binary Tree3 Bit Manipulation3 Data Stream3 All topics

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TitleSolutionAcceptDifficultyTopics

157. Read N Characters Given Read4VideoPremium

Solution42.5%Easy

Array, Interactive +1· 3 companies

1243. Array TransformationVideoPremium

Solution53.6%Easy

Array, Simulation· 1 company

3581. Count Odd Letters from NumberVideoPremium

Solution85.1%Easy

Counting, Hash Table +2

3687. Library Late Fee CalculatorVideoPremium

Solution94.4%Easy

Array, Simulation

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