var myNumbers = [4, 11, 32, 5, 19]
func mySum(_ input: [Int]) -> Int {
    var mySum = 0
    for i in 0..<input.count {
        mySum += input[i]
    }
    let averageValue = mySum / input.count
    return averageValue
}
print(mySum(myNumbers))

// => 14