Generate shuffled array in swift 3.0

Array+Shuffled.swift

//
//	ZArray+Z.swift
//	ZKit
//
//	The MIT License (MIT)
//	Copyright (c) 2016 Electricwoods LLC, Kaz Yoshikawa. All rights reserved.
//
//	Permission is hereby granted, free of charge, to any person obtaining a copy
//	of this software and associated documentation files (the "Software"), to deal 
//	in the Software without restriction, including without limitation the rights 
//	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
//	copies of the Software, and to permit persons to whom the Software is 
//	furnished to do so, subject to the following conditions:
//
//	The above copyright notice and this permission notice shall be included in 
//	all copies or substantial portions of the Software.
//
//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
//	WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//	THE SOFTWARE.
//

import Foundation

extension Array {

	func shuffled() -> [Element] {
		var results = [Element]()
		var indexes = (0 ..< count).map { $0 }
		while indexes.count > 0 {
			let indexOfIndexes = Int(arc4random_uniform(UInt32(indexes.count)))
			let index = indexes[indexOfIndexes]
			results.append(self[index])
			indexes.remove(at: indexOfIndexes)
		}
		return results
	}

}