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Apple

Challenges: 9Easy: 4Medium: 3Hard: 2

This Apple coding interview set pulls together 9 challenges, with a mix of 4 easy, 3 medium, 2 hard. The problems lean on arrays, sliding-window, hashing, recursion, trees, so you can drill the patterns that come up most and walk into the interview ready.

Topics this company tests

Apple coding challenges

  • Best Time to Buy and Sell Stock

    Difficulty: EasyTopics: arrays, sliding-window

  • Contains Duplicate

    Difficulty: EasyTopics: arrays, hashing

  • Invert Binary Tree

    Difficulty: MediumTopics: recursion, trees

  • Merge Two Sorted Lists

    Difficulty: EasyTopics: linked-lists

  • Min Stack

    Difficulty: MediumTopics: design, stacks

  • Plus One

    Difficulty: EasyTopics: arrays

  • Product of Array Except Self

    Difficulty: MediumTopics: arrays

  • Trapping Rain Water

    Difficulty: HardTopics: arrays, stacks, two-pointers

  • Word Break

    Difficulty: HardTopics: dynamic-programming, strings

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