How to check a string is symmetric or not in Swift

Question

return value == String(value.reversed())

This is what I tried. It works well but takes a little bit longer. Does anyone know a better way?

Answer 1

There is nothing available in the standard library for String, or for anything else, so a solution for only String probably isn't the best option.

You don't need to make a new instance of anything based on reversed; elementsEqual does the job.

public extension Sequence where Element: Equatable {
  var isSymmetric: Bool { elementsEqual(reversed()) }
}

"🐈🐆🐅🐆🐈".isSymmetric // true
"🐈🐆🐅".isSymmetric // false