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iOS Swift Collections and Control Flow Control Flow With Conditional Statements FizzBuzz Challenge

Posted by Mike Chael
Mike Chael
2,111 Points

How to do FizzBuzz Challenge with Switch Control Flow

Is it possible to solve the FizzBuzz challenge using switch? I attached my attempt below.

I tried several things like switching the "n" type to Bool, Int, and even Any - none worked.

fizzBuzz.swift 
func fizzBuzz(n:Bool) -> String {
  // Enter your code between the two comment markers
switch n {
  case n % 3 == 0: return "Fizz"
  case n % 5 == 0: return "Buzz"
  case n % 3 == 0 && n % 5 == 0: return "FizzBuzz"
   case n % 3 != 0 && n % 5 != 0: return n
  }
  // End code
  return "\(n)"
}

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

First, your code should only go between the comments, in particular you should not change the type of "n".

And a "switch" only matches values to it's argument, it doesn't perform logical tests on the "case" expressions. But you can still do this with a switch by creating a value that can be compared with:

func fizzBuzz(n: Int) -> String {
  // Enter your code between the two comment markers
  var fb = 0
  if (n % 3 == 0) { fb += 1 }
  if (n % 5 == 0) { fb += 2 }
  switch fb {
    case 1: return "Fizz"
    case 2: return "Buzz"
    case 3: return "FizzBuzz"
    default: break
  }
  // End code
  return "\(n)"
}