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iOS Swift Functions and Optionals Optionals Review: Functions

help

what is the correct answer ?

divisible.swift
func isDivisible(#dividend: Int, #divisor: Int) -> Bool {
    if dividend % divisor == 0 {
        return true
    } else {
        return false
    }
}

2 Answers

Holger Liesegang
Holger Liesegang
50,595 Points

Hi Zeyad!

This challenge asks you for the opposite of the isDivisible function - so instead of looking for a truthy value you have to look for the falsy one like this:

func isNotDivisible(#dividend: Int, #divisor: Int) -> Bool {
  if dividend % divisor != 0 {
    return true
  } else {
    return false
  }
}

Hi there,

Another solution to this is to use the existing method and negate its returned value:

func isNotDivisible(#dividend: Int, #divisor: Int) -> Bool {
   return !isDivisible(dividend: dividend, divisor: divisor)
}

Steve.