Get the last character of a string without using array?

"Without using Array on swift"

Here you go:

var text = "Lorem ipsum"
var lastChar = text.substringFromIndex(text.endIndex.predecessor())

Swift 4:

First some char Last some char

let strOSName = "mac operating system"
print(strOSName.prefix(3))       //first char. o/p:  MAC
print(strOSName.suffix(6))       //last char.  o/p:  system

    let text = "Muhammad Raza"
    println("\(text[advance(text.endIndex, -1)])")

in Short !

Using last to get the last Character

For Swift 4:

let str = "hello world😍"
let lastChar = str.last!   // lastChar is "😍"

For Swift 2 and Swift 3:

let str = "hello world😍"
let lastChar = str.characters.last!   // lastChar is "😍"

For Swift 1.2:

let str = "hello world😍"
let lastChar = last(str)!   // lastChar is "😍"

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Subscripting the String to get the last Character

This works for Swift 3 and Swift 4:

let str = "hello world😍"
let lastChar = str[str.index(before: str.endIndex)]   // lastChar is "😍"

And for Swift 1.2 and Swift 2:

let str = "hello world😍"
let lastChar = str[str.endIndex.predecessor()]   // lastChar is "😍"