exercise 12.01 Functions (Wallet)

import Foundation
import Glibc
 
func generateWallet(walletLenght: Int) -> [Int] {
    let typesOfBanknotes = [50, 100, 500, 1000, 5000]
    var wallet: [Int] = []
    for _ in 1...walletLenght {
        let randomIndex = 2
        wallet.append(typesOfBanknotes[randomIndex])
    }
    return wallet
}
func sumWallet(banknotsFunction wallet: (Int) -> ([Int]) ) -> Int? {
    let myWalletArray = wallet(5)
    var sum: Int = 0
    for oneBanknote in myWalletArray {
        sum += oneBanknote
    }
    return sum
}
print(sumWallet(banknotsFunction: generateWallet)!)