Write function called numberOfOccurrencesInString which will return the number of times a number (i.e 0 or 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9) occurs in a string. Arguments: A string Return value: An integer (the number of times a number occurs in the string) For example: String "Commodore 64" would return 2 String "ZX Spectrum" would return O String "IBM PC 5150" would return 4 Please write in clean code, which includes: No obsolete lines of code: o No print statements in the function o No code which has no impact on the return value No input statements in the function