Array+Shuffle.swift

extension Array {

    var shuffled: Array<T> {
        var newer = self
        newer.shuffle()
        return newer
    }
    
    mutating func shuffle() {
        let count = self.count
        if count > 1 {
            for x in 0..<count {
                let idx = Int(arc4random_uniform(UInt32(x+1)))
                swap(&self[x], &self[idx])
            }
        }
    }


}