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  • Ali Ayoub avatar
    Ali Ayoub
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    Kotlin Developer

    ByLogo of the JetBrains Academy provider JetBrains Academy

    Learn Kotlin for backend, frontend, and Android app development to expand your reach across multiple platforms with a concise language developed by JetBrains.

    • Courses (2)
    • Projects (12)

    Learn Kotlin for backend, frontend, and Android app development to expand your reach across multiple platforms with a concise language developed by JetBrains.More details

    Certificate of completion (July 13, 2026)

    https://hyperskill.org/certificates/163748b6-7595-4cf6-8f68-2bd8849b2173.pdf

    You suddenly remember you need to call your aunt and wish her a happy birthday, but how do you find her number quickly in a giant phonebook? Write a program that will solve this problem once and for all. Create a phonebook that allows you to find the information you need quickly and easily. Names and numbers, here we come.

    More details

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    User has been actively learning for 6 days and:

    Completed423 topics12 projects

    Solved66 problems0 problems of the day

    Posted0 comments0 useful links0 hints0 solutions

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    • Badge  Committed Learner icon level 3
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      Committed Learner
    LanguagesPythonJavaKotlin & AndroidSQL and DatabasesGo & C++
    Career pathsWeb DevBackendCloud & DevOpsData Science & Analysis
    Subjects✨ AI EngineeringAI Coding ToolsML & Math
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