//1.1
func minValue(v1: Int, v2: Int) -> Int{
    if v1>v2 {
        return v2
    }
    else {
        return v1
    }
}
minValue(v1: 10, v2: 9)
minValue(v1: -8, v2: -5)

//1.2
func lastDigit(_ num: Int) -> Int {
    return num%10
}
lastDigit(1569)

//1.3
func divides(_ v1: Int,_ v2: Int) -> Bool {
    return (v1%v2==0)
}
func countDivisors(_ number: Int) -> Int {
    var val = 1
    var divisors = 0
    while val<=number {
        if (divides(number, val)) {
            divisors += 1
        }
        val+=1
    }

    return divisors
}
func isPrime(_ number: Int) -> Bool {
    return countDivisors(number) == 2
}
divides(7, 3)
divides(8, 4)
countDivisors(1)
countDivisors(10)
countDivisors(12)
isPrime(3)
isPrime(8)
isPrime(13)

//2.1
func smartBard(_ n: Int, f: ()->()){
    for _ in 1...n {
        f()
    }
}
smartBard(3){
    print("I will pass this course with best mark, because Swift is geat")
}

//2.2
let numbers = [10,16,18,30,38,40,44,50]
let numbers2: [Int] = numbers.filter{$0%4==0}
print(numbers2)

//2.3
print(numbers.reduce(0){max($0,$1)})

//2.4
var strings = ["Gdansk", "University", "of", "Technology"]
print(strings.reduce(""){$0 + $1 + " "})

//2.5
let numbers3 = [1,2,3,4,5,6]
print(numbers3.filter{$0%2==1}.map{$0*$0}.reduce(0){$0+$1})

//3.1
func minmax(_ v1: Int, _ v2: Int) -> (Int, Int) {
    return (min(v1,v2), max(v1,v2));
}
minmax(10,5)

//3.2
var stringsArray = ["gdansk", "university", "gdansk", "university", "university", "of", "technology", "technology", "gdansk", "gdansk"]
var countedStrings: [(String, Int)] = []
var stringSet = Set(stringsArray)
for strSet in stringSet {
    var ile = 0
    for str in stringsArray {
        if strSet == str {
            ile += 1
        }
    }
    countedStrings.append((strSet, ile))
}
print(countedStrings)

//4.1
enum Day: Int {
    case Monday = 1
    case Tuesday = 2
    case Wendesday = 3
    case Thursday = 4
    case Friday = 5
    case Saturday = 6
    case Sunday = 7

    func showEmoji(){
        switch self {
        case .Monday:
            print("😞")
        case .Tuesday:
            print("😖")
        case .Wendesday:
            print("😭")
        case .Thursday:
            print("😡")
        case .Friday:
            print("😍")
        case .Saturday:
            print("🍺")
        case .Sunday:
            print("😥")

        }

    }
}
Day.Friday.showEmoji()