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Antonija Pek
5,819 PointsHow bad did I miss the result?
// Enter your code below
func isOdd(num: number) -> Bool {
var odd = numbers.map({ $0 % 3 == 0 })
return odd
}
This is my try. What did I do wrong?
2 Answers
Max Hirsh
16,773 PointsWoah, I have been summoned! I haven't taken this course yet but I went ahead and took a look at the challenge. It looks like you are on the right track, but there are a couple things that are throwing off your code. The first is that "number" isn't a variable type that swift recognizes, so I would try using "Int". Next, the problem is asking you to write a function that will examine one number at time, not an array, so the first line of the function should be called on "num". The last point is that determining whether a number is odd or even is a matter of whether or not is divisible by 2. So that logic test should look at whether num % 2 is 1 or 0. Putting everything together to modify your function would look like this:
func isOdd(num: Int) -> Bool {
var odd = num % 2 == 1
return odd
}
Hope this helps!
Antonija Pek
5,819 PointsHi, thanks for answering. I haven't had a chance to test this code, but I will.
Alejandro Machado
16,091 PointsI'm late to the party, but Max is right! The function can also be written even more concisely like this:
func isOdd(num: Int) -> Bool {
return num % 2 == 1
}
That's right, you don't even need to store the "oddness" of the number in a variable if all you're going to do is return it.
Also, keep in mind that the map function applies a given function to every element in an array and returns that array. Your isOdd function is supposed to return a (single) Bool, so that's why the compiler is giving you an error.