import Foundation
func removeTrailingSlashes(_ input: String) -> String {
return input.replacingOccurrences(of: "/+$", with: "", options: .regularExpression)
}
print(removeTrailingSlashes("/ABC/"))
print(removeTrailingSlashes("/ABC////"))
print(removeTrailingSlashes("/ABC"))
/*
run:
/ABC
/ABC
/ABC
*/