gistfile1.swift

import UIKit

class Bob {
    class func hey(prompt: String) -> String {
        let shouting = "Woah, chill out!"
        let question = "Sure."
        let touchy = "Fine, be that way."
        let apathy = "Whatever."
        if loopForMatch(type: NSCharacterSet.uppercaseLetterCharacterSet(), stringToEvaluate: prompt) {
            return shouting
        }
        else if loopForMatch(type: NSCharacterSet.whitespaceCharacterSet(), stringToEvaluate: prompt) || prompt.isEmpty {
            return touchy
        }
        else if (prompt.hasSuffix("?")){
            return question
        }
        else {
            return apathy
        }
    }
    
    class func loopForMatch (#type: NSCharacterSet, stringToEvaluate: String) -> Bool {
        var isUpper: Bool = false
        for chrs in stringToEvaluate {
            if !isMatch(type: type, characterToEvaluate: String(chrs)) {
                isUpper = false
                break
            }
            else {
                isUpper = true
            }
        }
        return isUpper
    }
    
    class func isMatch(#type: NSCharacterSet, characterToEvaluate: String) -> Bool {
        return characterToEvaluate.rangeOfCharacterFromSet(type) != nil
    }
}

//Bob.hey("hello")
//Bob.hey("Tom-ay-to, tom-aaaah-to")
Bob.hey("WATCH OUT!")