Bubble, Merge & Quick sorts

Bubble sort

//bubble sort
func bubbleSort (unsortedArray array: [Int]) -> [Int] {

    var iteration = 0
    var newArray = array

    while iteration < newArray.count - 1 {
        var i = 0

        while i < newArray.count - 1 { 
        
            if newArray[i] > newArray[i+1] {
               newArray[i..<i+2] = [array3[i+1], array3[i]]
            }
            i+=1
        }
        iteration+=1
    }
    return newArray
}