//: Playground - noun: a place where people can play

import Cocoa


//Functions
//1
func minValue(first:Int,second:Int) -> Int{
    if(first >= second){
        return second;
    }
    else{
        return first;
    }
}

print(minValue(first: 7,second: 6));

//2
func lastDigit(first:Int)->Int{
    return first%10;
}

print(lastDigit(first: 123));

//3
func divides(first:Int,second:Int) -> Bool{
    if(first%second == 0){
        return true;
    }
    else{
        return false;
    }
}

func countDivisors(number:Int)->Int{
    var divisorsNumber=0;
    for i in 1...number{
        if(divides(first: number,second: i)){
            divisorsNumber=divisorsNumber+1;
        }
    }
    return divisorsNumber;
}

func isPrime(number:Int)->Bool{
    if(countDivisors(number: number) == 2){
        return true;
    }
    else{
        return false;
    }
}

//Closures
//1
var closure: () -> ()={
    print("I will pass this course with the best mark because Swift is great!");
}
func smartBart(n:Int,f:()->())->(){
    for _ in 1...n{
        f()
    }
}
smartBart(n: 8, f: closure);
//2
let numbers = [10,16,18,30,38,40,44,50];
print(numbers.filter{$0%4==0});
//3
print(numbers.reduce(0){if($1>$0){
    return $1
    }
    else{
    return $0
    }})
//4
var strings = ["Gdansk","University","of","Technology"];
print(strings.reduce(""){$0+$1+" "});
//5
let newNumbers = [1,2,3,4,5,6];
print(newNumbers.filter{$0%2 == 1}.map{$0*$0}.reduce(0){$0+$1});

//Tuples
//1
func minmax(first:Int,second:Int)->(Int,Int){
    return (first,second);
}

var minmaxTuple = minmax(first: 4,second: 6);
//2
var stringsArray = ["gdansk","gdansk","gdansk","gdansk","university","university","university","of","technology","technology"];
var counts: [String:Int] = [:];
for string in stringsArray{
    counts[string] = (counts[string] ?? 0) + 1
}
var countedStrings: [(String,Int)] = [];

for (key,value) in counts {
    countedStrings.append((key,value));
}
print(countedStrings);

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

    func returnEmote() -> String{
        switch self{
        case.Monday:
            return ":)"
        case.Tuesday:
            return ":/"
        case.Wednesday:
            return ":("
        case.Thursday:
            return ":D"
        case.Friday:
            return "XD"
        case.Saturday:
            return ":P"
        case.Sunday:
            return ":X"
        }
    }
}

let day = Day.Monday;
print(day);
print(day.rawValue);
print(day.returnEmote());