Write a static method named countevendigits that accepts an integer as its
parameter and returns the number of even-valued digits in that number. an even-valued digit is either 0,
2, 4, 6, or 8. for example, the number 8546587 has four even digits (the two 8s, the 4, and the 6),
so the call countevendigits(8346387) should return 4. you may assume that the value passed to
your method is non-negative.