Swift .sort(by:) and .sorted(by:) examples

Sort and SortBy.swift

var favoriteFoods = ["Pizza", "Apple Pie", "Sushi", "Bacon"]

let aToZFoods = favoriteFoods.sorted()
print(aToZFoods) // sorted array
print(favoriteFoods) // unchanged original
print("")

// .sorted() is the same as .sorted(by: <)
let alphabetizedFoods = favoriteFoods.sorted(by: <)
print(alphabetizedFoods) // sorted array
print(favoriteFoods) // unchanged original
print("")

// to reverse the order, use >
let zToAFoods = favoriteFoods.sorted(by: >)
print(zToAFoods) // sorted array
print(favoriteFoods) // unchanged original
print("")

// .sort(by:) works the same way, but it changes the order of the elements in the array.
favoriteFoods.sort()
print(favoriteFoods) // alphabetizes the array
favoriteFoods.sort(by:>)
print(favoriteFoods) // reverse alphabetical order the array
favoriteFoods.sort(by:<) // back to alphabetical order