CodingBat replaceAsWithBs

replaceAsWithBs

Given a string, return a new string that replaces all the ocurrances of character A in the given string with character B. Don't use the replace method of the String class. (Difficulty Level: 3)

replaceAsWithBs("ABCDE") → "BBCDE"
replaceAsWithBs("ABAB") → "BBBB"
replaceAsWithBs("Access") → "Bccess"

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