SwiftRandom numbers

extension Int {
    /// SwiftRandom extension
    static func random(lower: Int = 0, _ upper: Int = 100) -> Int {
        return lower + Int(arc4random_uniform(UInt32(upper - lower + 1)))
    }
    
    var array: [Int] {
        return description.characters.map{Int(String($0)) ?? 0}
    }
}

extension Double {
    /// SwiftRandom extension
    static func random(lower: Double = 0, _ upper: Double = 100) -> Double {
        return (Double(arc4random()) / 0xFFFFFFFF) * (upper - lower) + lower
    }
}

extension Float {
    /// SwiftRandom extension
    static func random(lower: Float = 0, _ upper: Float = 100) -> Float {
        return (Float(arc4random()) / 0xFFFFFFFF) * (upper - lower) + lower
    }
}

extension CGFloat {
    /// SwiftRandom extension
    static func random(lower: CGFloat = 0, _ upper: CGFloat = 1) -> CGFloat {
        return CGFloat(Float(arc4random()) / Float(UINT32_MAX)) * (upper - lower) + lower
    }
}