shuffle arrays in swift

Shuffle.playground

//: Playground - noun: a place where people can play

import UIKit

//1. create an array
var numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

//2. initialize an empty array
var emptyArray = [Int]()

//3. create a random number between 0 and the number of items in the array

var randomNumber: Int

for _ in numbers {
    randomNumber = Int(arc4random_uniform(UInt32(numbers.count - 1)))
    
    //4. randomly add an item from the numbers array to the empty array
    emptyArray.append(numbers[randomNumber])
    
    //5. remove the item that was added to emptyArray from numbers array
    numbers.remove(at: randomNumber)
    
    //6. print emptyArray
    //print(emptyArray)
}


func shuffleArray(arrayToBeShuffled array1: [String]) -> [String]{  //edit code here
    var oldArray = array1
    var newArray = [String]() //edit code here
    var randomNumber: Int
    
    for _ in array1{
        randomNumber = Int(arc4random_uniform(UInt32(oldArray.count - 1)))
        newArray.append(oldArray[randomNumber])
        oldArray.remove(at: randomNumber)
    }
    
    return newArray
}

var even = [2, 4, 6, 8, 10, 12, 14, 16, 18]
//shuffleArray(arrayToBeShuffled: even)

var words = ["hi", "my", "name", "is", "victor"]
shuffleArray(arrayToBeShuffled: words)