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Meta

Challenges: 17Easy: 4Medium: 9Hard: 4

This Meta coding interview set pulls together 17 challenges, with a mix of 4 easy, 9 medium, 4 hard. The problems lean on arrays, math, sorting, sliding-window, bfs, so you can drill the patterns that come up most and walk into the interview ready.

Topics this company tests

Meta coding challenges

  • API Latency Percentile

    Difficulty: MediumTopics: arrays, math, sorting

  • Best Time to Buy and Sell Stock

    Difficulty: EasyTopics: arrays, sliding-window

  • Binary Tree Level Order Traversal

    Difficulty: MediumTopics: bfs, trees

  • Cyclic Dependency Detector

    Difficulty: MediumTopics: dfs, graphs, topological-sort

  • Fraud Ring Components

    Difficulty: HardTopics: dfs, graphs, union-find

  • Group Anagrams

    Difficulty: MediumTopics: hashing, strings

  • Longest Substring Without Repeating Characters

    Difficulty: MediumTopics: hashing, sliding-window, strings

  • Merge K Sorted Lists

    Difficulty: HardTopics: divide-and-conquer, heap, linked-lists

  • Product of Array Except Self

    Difficulty: MediumTopics: arrays

  • Search in Rotated Sorted Array

    Difficulty: MediumTopics: arrays, binary-search

  • Serialize and Deserialize Binary Tree

    Difficulty: HardTopics: bfs, design, trees

  • Three Sum

    Difficulty: MediumTopics: arrays, sorting, two-pointers

  • Top Services by Error Rate

    Difficulty: EasyTopics: hashing, math, sorting

  • Two Sum

    Difficulty: EasyTopics: arrays, hashing

  • Valid Parentheses

    Difficulty: EasyTopics: stacks, strings

  • Validate Binary Search Tree

    Difficulty: MediumTopics: binary-search, recursion, trees

  • Word Break

    Difficulty: HardTopics: dynamic-programming, strings

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