Factorial!

Factorial!

// Mark: - Factorial!

// Iterative
func factorialIterative(of number: Int) -> Int {
    
    var factorial: Int = 1
    
    for i in 2...number {
        factorial *= i
    }
    
    return factorial
}

print("factorial Iterative", factorialIterative(of: 5))

// Recursive
func factorialRecursive(of number: Int) -> Int {
    guard number > 1 else { return 1 }
    
    return number * factorialRecursive(of: number - 1)
}

print("factorial recursive", factorialRecursive(of: 5))