let daysInTheMouths = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
let mouths = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
//var mouthsAndDays: [(mouths: String, days: Int)] = [("f", 1), ("f", 1), ("f", 1), ("f", 1), ("f", 1), ("f", 1), ("f", 1), ("f", 1), ("f", 1), ("f", 1), ("f", 1), ("f", 1)]
var mouthsAndDays = [(mouths : String, days : Int)](repeating: ("" , 0), count: 12)
var mouthsAndDays1 = [(mouths : String, days : Int)]()
for i in daysInTheMouths {
    print(i)
}
for i in 0..<daysInTheMouths.count {
    print(mouths[i] + " : " + String(daysInTheMouths[i]))
}
print("\n")
for (index, value) in daysInTheMouths.enumerated() {
    print("\(mouths[index]) : \(value)")
}
print("\n")
for i in 0..<daysInTheMouths.count {
    mouthsAndDays[i].mouths = mouths[i]
    mouthsAndDays[i].days = daysInTheMouths[i]
}
for i in 0..<daysInTheMouths.count {
    let mouth = (mouths[i], daysInTheMouths[i])
    mouthsAndDays1.append(mouth)
}
for i in 0..<daysInTheMouths.count {
    print(mouthsAndDays[i])
}
print("\n")
for i in 0..<daysInTheMouths.count {
    print(mouthsAndDays1[i])
}
print("\n")
for i in stride(from: daysInTheMouths.count-1, to: -1, by: -1) {
    print(mouths[i] + " : " + String(daysInTheMouths[i]))
}
print("\n")
let dob = (moth: 7, day: 19)
var sum = Int()
for i in 0...dob.moth-1 {
    if i == dob.moth-1 {
        sum += dob.day
    } else {
        sum += mouthsAndDays[i].days
    }
}
print("Days before my birthday : \(sum)\n")

//2 задание
let consts = [Int("34"), Int("45h"), Int("4h4"), Int("59"), Int("35j")]
var sumOfConsts1 = Int()
var sumOfConsts2 = Int()
var sumOfConsts3 = Int()
for i in consts {
    if let tmp = i {
        sumOfConsts1 += tmp
    }
}
for i in consts {
    if i != nil {
        sumOfConsts2 += i!
    }
}
for i in consts {
    sumOfConsts3 += i ?? 0
}
print(sumOfConsts1)
print(sumOfConsts2)
print(sumOfConsts3)
print("\n")

//3 задание
let alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
var reverseAlphabet = Array(repeating: "", count: alphabet.count)
var i = 0
for letter in alphabet {
    reverseAlphabet[(alphabet.count-1)-i] += String(letter)
    i += 1
}
var reverseAlphabet1 = [String]()
for letter in alphabet {
    reverseAlphabet1.insert(String(letter), at: 0)
}
for j in reverseAlphabet {
    if j == "A" {
        print(j)
        break
    }
    print(j, terminator: " , ")
}
for i in reverseAlphabet1 {
    if i == "A" {
        print(i)
        break
    }
    print(i, terminator: " , ")
}