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Hash Maps

Challenges: 13Easy: 5Medium: 6Hard: 2

This Hash Maps set gathers 13 coding problems, with a mix of 5 easy, 6 medium, 2 hard. They show up in interviews at companies like Careem, Tamara, Dubizzle, Siemens EDA, Fawry, so you can master the pattern once and recognize it everywhere.

Hash Maps coding problems

  • Longest Palindrome Build

    Difficulty: EasyAsked by: Careem

  • LRU Cache Operations

    Difficulty: HardAsked by: Careem, Tamara

  • Palindrome Permutation

    Difficulty: EasyAsked by: Careem

  • Find Repeating and Missing Number

    Difficulty: MediumAsked by: Dubizzle

  • Roman to Integer

    Difficulty: EasyAsked by: Siemens EDA

  • Top K Frequent Elements

    Difficulty: MediumAsked by: Careem

  • Two Sum

    Difficulty: EasyAsked by: Fawry, Noon, Vodafone Egypt

  • Valid Anagram

    Difficulty: EasyAsked by: Careem

  • Message Deduplication Window

    Difficulty: MediumAsked by: Talabat, Uber

  • Multi Tenant Quota Enforcer

    Difficulty: MediumAsked by: Amazon, Fawry, Google

  • Ride Demand Heatmap

    Difficulty: MediumAsked by: Careem, Talabat, Uber

  • Stream Lag Alert Aggregator

    Difficulty: MediumAsked by: Microsoft, Noon

  • Wallet Reconciliation

    Difficulty: HardAsked by: Amazon, Fawry, Noon

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