Define a class
named EvenCounter
.
It should have a public instance method named addValue
taking a single Int
argument.
If the argument passed to addValue
is even, it increments the count stored by the counter.
addValue
does not return a value.
Your count
property should be publicly readable but not publicly writable.
Your class should also provide a constructor taking a single Int
argument that sets the initial count, which
you should assert
is non-negative.
Your class should not allow modifications to the count
except using the addValue
method.
When you are finished your class should work as follows:
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