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step_4.md

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Here is "Step 4":
Our FooBarQix service is up and running. Based on feedback we have decided to create new service InfQixFoo.

So, we need to create another service InfQixFoo. FooBarQix service stays as it is, this is mandatory for our reputation!

InfQixFoo will take a number (positive integer) and provide :

  • "Inf" if this number is multiple of 8
  • "Qix" if this number is multiple of 7
  • "Foo" if this number is multiple of 3

If number have several multiples, they appear in order (Inf; Qix; Foo). We will use semicolon as separator.

We will return the given number as a string if there is no transformation at all to do.

If the given number contains specific digit, we will append a word to the transformation in the order they appear in the number. So if a number contains :

  • 3, then we append "Foo"
  • 8, then we append "Inf"
  • 7, then we append "Qix"

So we may have multiples followed by occurrences.

Let's go to final step.