//1
var x = "this is string"
var y = 1
var z = 1.0

//2
let constString: String = "this is constant string"
let constInt: Int = 2
let constFloat: Float = 2.0

//3
let const1 = x + " " + String(y)
let const2 = "\(x) \(String(y))"

//4
var arr = ["a","b","c"]
var dict = [1:"one",2:"two",3:"three"]

//5
arr.append("d")
dict.updateValue("four", forKey: 4)

//6
var lottoResults = ["29-11-14":[4, 5, 21, 30, 31, 49],"27-11-14":[5, 8, 10, 19, 23, 40]]

//7
var emptyDict = [Character:Int]()

//8
var startChar :UnicodeScalar = "A"
for i in 1...10 {
    emptyDict.updateValue(i, forKey: Character.init(UnicodeScalar.init(startChar.value+UInt32(i)-1)!))
}
print(emptyDict)

//9
for losowanie in lottoResults{
    print("Losowanie dnia \(losowanie.key):")
    for number in losowanie.value{
        print("- \(number)")
    }
}

//10
func NWD(a:Int, b:Int) -> Int{
    let mi = min(abs(a),abs(b))
    let ma = max(abs(a),abs(b))
    let rem = ma % mi
    if rem == 0{
        return mi
    }
    else{
        return NWD(a:mi,b:rem)
    }
}
print(NWD(a:7,b:29))
print(NWD(a:125,b:10))

//11
func NWDkrotka(a:Int, b:Int) -> (Int,Int,Int){
    let nwd = NWD(a:a,b:b)
    return (nwd,a/nwd,b/nwd)
}
print(NWDkrotka(a:7,b:29))
print(NWDkrotka(a:125,b:10))

//12
func cipher(str:String,fun:[(Character) -> Character]) -> String{
    return String(Array(str).map(fun))
}