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iOS

Cory Sovilla
Cory Sovilla
11,087 Points
Posted by Cory Sovilla
Cory Sovilla
11,087 Points

Trying to use GKShuffledDistribution to get a "random" number

Hello, I am trying to use GKShuffledDistribution to get a "random" number that is between 0 and the last index of an array but I can't seem to figure out how to use it properly.

GKShuffledDistribution seems to give off a GKShuffledDistribution type and that is what is holding me back. I have no idea what to use that for or how to convert it.

Martin Wildfeuer
Martin Wildfeuer
Courses Plus Student 11,071 Points

Please post your existing code so we have something to work with :)

3 Answers

Martin Wildfeuer
PLUS
Martin Wildfeuer
Courses Plus Student 11,071 Points
Martin Wildfeuer
Martin Wildfeuer
Courses Plus Student 11,071 Points

I know you are asking for a GKShuffledDistribution solution explicitly, but as no code has been provided yet and I am not sure if using GameKit makes sense here, let me show you an alternative solution using arc4random_uniform:

let array = ["One", "Two", "Three", "Four", "Five"]
let count = UInt32(array.count)

for _ in 1...10 {
    let random = Int(arc4random_uniform(count))
    print(array[random])
}
Cory Sovilla
Cory Sovilla
11,087 Points
Cory Sovilla
Cory Sovilla
11,087 Points

I am at work at the moment. What I am trying to do is modify the FunFacts app in "Building A Simple iPhone App in Swift 2.0" so that when you push the button it doesn't repeat the same fact or same color.

Both facts and colors are in a array, facts are Strings and colors are UIColor.

Cory Sovilla
Cory Sovilla
11,087 Points
Cory Sovilla
Cory Sovilla
11,087 Points

Also, in your eyes what instances do you use GameKit for random numbers over arc4.