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CodingBat code practice

 

findTheFours


FindingThe4's. Write the method that accepts a string of characters (str) and returns the count of the number of occurrences of "4". Be sure to check the string for length as if it is empty, return zero fours. Example: "ABCD4EFG" would return 1.


findTheFours("AABCD4EFG") → 1
findTheFours("4A4B4C4D") → 4
findTheFours("This is fun 4 me") → 1

...Save, Compile, Run (ctrl-enter)

public int findTheFours(String str) { }

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