Web Reference: Java > String-2 > doubleChar (CodingBat Solution) Problem: Given a string, return a string where for every char in the original, there are two chars. doubleChar ("The") → "TThhee" doubleChar ("AAbb") → "AAAAbbbb" doubleChar ("Hi-There") → "HHii--TThheerree" While the code is focused, press Alt+F1 for a menu of operations. Solutions to every single CodingBat exercise that I have successfully worked out. Hopefully these will be very easily understood. Please note: These are all solutions to the Java section, not the Python section. As these videos are made by our aspiring computer scientists that are in high school, we believe the videos are friendly and relatable. We hope that our website, voiceofcoding.com, will help...
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Codingbat Doublechar Java - Latest Information & Updates 2026 Information & Biography

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