Implementation of fooBarQix: a function String compute(String) which implements the following rules.
If the number is divisible by 3, write “Foo” instead of the number
If the number is divisible by 5, add “Bar”
If the number is divisible by 7, add “Qix”
For each digit 3, 5, 7, add “Foo”, “Bar”, “Qix” in the digits order.
###Examples :
1 => 1
2 => 2
3 => FooFoo (divisible by 3, contains 3)
4 => 4
5 => BarBar (divisible by 5, contains 5)
6 => Foo (divisible by 3)
7 => QixQix (divisible by 7, contains 7)
8 => 8
9 => Foo
10 => Bar
13 => Foo
15 => FooBarBar (divisible by 3, divisible by 5, contains 5)
21 => FooQix
33 => FooFooFoo (divisible by 3, contains two 3)
51 => FooBar
53 => BarFoo
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