Introduction
I have used Swift for windows 1.9 for debugging purpose. But you can use any Swift programming language compiler as per your availability.
Write a Swift program to convert the last three characters in upper case
func casestr(_ input: String) -> String {
if input.characters.count < 3
{
return input.lowercased()
}
else
{
var newInput = input.characters
var str1: String = ""
let lastThree = newInput.suffix(3)
newInput.removeLast(3)
let lastThreeUpper = String(lastThree).uppercased()
str1.append(contentsOf: newInput)
str1.append(String(lastThree).uppercased())
return str1
}
}
print(casestr("TechStudy.org"))
print(casestr("Swift"))Result
