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iOS Swift 2.0 Collections and Control Flow Control Flow With Conditional Statements FizzBuzz

nicholasdevereaux
nicholasdevereaux
16,353 Points
Posted by nicholasdevereaux
nicholasdevereaux
16,353 Points

Can a switch statement be used here?

Can a switch statement be used here? And can someone provide an example. Thank you!

fizzBuzz.swift 
func fizzBuzz(n: Int) -> String {
  // Enter your code between the two comment markers

  // End code
  return "\(n)"
}

2 Answers

Josh Reynolds
Josh Reynolds
10,734 Points
Josh Reynolds
Josh Reynolds
10,734 Points

Hey nicholasdevereaux

Here is an example of using a switch statement to run through the loop. If you're not using the values inside the case body you can omit them and run a case _ where statement.

for n in 1...100 {
    switch (n){
    case _ where n%3 == 0 && n%5 == 0:
        print("FizzBuzz")
    case _ where n%3 == 0:
        print("Fizz")
    case _ where n%5 == 0:
        print("Buzz")
    default:
        print("\(n)")
    }
}

I've also seen it been done with switching on a tuple like such

 switch (n%3, n%5) {
    case (0, 0):
        print("FizzBuzz") 
    case(0, _): 
        print("Fizz")
    case(_, 0):
        print("Buzz")
    default:
        print("\(n)")
}

where the _ represents any other value.

Hope that helps!

nicholasdevereaux
nicholasdevereaux
16,353 Points
nicholasdevereaux
nicholasdevereaux
16,353 Points

Thank you! I also should have asked why an IF statement is better. The switch statement I came up with gave me an error stating something about I wasn't providing a bool using integers (sorry I can't remember exactly what the error said). My code looked like this:

switch n { case n % 3 == 0 && n % 5 == 0: print("FizzBuzz") case n % 3 == 0: print("Fizz") case n % 5 == 0: print("Buzz")