InsertionSort in swift

InsertionSort.swift

import Foundation

func insertionSort(array: [Int]) -> [Int] {
	var array = array

	for index in 1..<array.count {
		let nextValue = array[index]
		var aux = index - 1

		while aux >= 0 && array[aux] > nextValue {
			swap(&array[aux+1], &array[aux])
			aux -= 1
		}
	}
	return array
}