Factorial.kt

Factorial.kt

// we assume that n is never negative
fun calculateFactorialProcedural(n: Int): Int {
    var factorial = 1
    var i = 1

    while (i <= n) {
        factorial *= i
        i++
    }

    return factorial
}

fun calculateFactorialStructured(n: Int): Int {
    return if (n == 0 || n == 1) {
        1
    } else {
        var factorial = 1
        for (i in 2..n) {
            factorial *= i
        }
        factorial
    }
}