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CodingBat code practice

 

replaceAbyB


Given an input String str, return a new String where the sole A is replaced by B. Use only the basic String methods learned in class. (hint: use IndexOf() ).


replaceAbyB("aAb") → "aBb"
replaceAbyB("A") → "B"
replaceAbyB("abAck") → "abBck"

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public String replaceAbyB(String str) { }

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