How to reverse array in Swift without using “.reverse()”?

Question

I have array and need to reverse it without Array.reverse method, only with a for loop.

var names:[String] = [\"Apple\", \"Microsof         


        

Answer 1

do you mean

var names = ["Apple", "Microsoft", "Sony", "Lenovo", "Asus"]
var newNames = [String]()

for var i = names.count - 1; i >= 0 ; i-- {
  newNames.append(names[i])
}
names = newNames

or

names.map {newNames.insert($0, atIndex: 0)}
names = newNames

Answer 2

var names:[String] = [ "A", "B", "C", "D", "E","F","G"]
var c = names.count - 1
var i = 0
while i < c {
    swap(&names[i++],&names[c--])
}

Answer 3

Here is how I did it and there is no warning for Swift 3

let names = ["Apple", "Microsoft", "Sony", "Lenovo", "Asus"]
var reversedNames = [String]()

for name in names.enumerate() {
  let newIndex = names.count - 1 - name.index
  reversedNames.append(names[newIndex])
}

or just simply

reversedNames = names.reverse()