mhlangagc

func twoStrings(stringA: String, stringB: String) -> String {
    
    let firstSet = Set(stringA.lowercaseString.characters)
    let secondSet = Set(stringB.lowercaseString.characters)
    
    if firstSet.intersect(secondSet).count > 0 {
        return "YES"   
    } else {
   
        return "NO"

mhlangagc

import UIKit

//Random Interger Generator :: You could alternatively create your own array of Intergers. I prefer a a random way to my array length, minumum and maximum elements. 

func randomIntergerInRange(low:Int, high:Int) -> Int {
    
    let randomGeneratedNumber = low + Int(arc4random()) % (high - low);
    return Int(randomGeneratedNumber)

}