Web Reference: Codewars is where developers achieve code mastery through challenge. Train on kata in the dojo and reach your highest potential. In this quick tutorial, I show you how to solve a super simple yet fun coding challenge: doubling an integer and returning it. Perfect for beginners looking to practice their skills or for anyone... Double Char Given a string, you have to return a string in which each character (case-sensitive) is repeated once.
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Codewars Python 8 Kyu Double - Latest Information & Updates 2026 Information & Biography

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Last Updated: April 4, 2026
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