Anonymous Kotlin function: Calculate a factorial

Last update on December 20 2024 12:55:49 (UTC/GMT +8 hours)

Write an anonymous Kotlin function to calculate the factorial of a number.

Sample Solution:

Kotlin Code:

fun main() {
    val number = 5

    fun factorial(n: Int): Int {
        return if (n <= 1) {
            1
        } else {
            n * factorial(n - 1)
        }
    }

    val result = factorial(number)
    println("Factorial of $number is $result")
}

Sample Output:

Factorial of 5 is 120

Explanation:

In the above exercise -

The function "factorial()" takes an integer n as input and calculates the factorial using recursion.

Inside the "factorial()" function, we check if n is less than or equal to 1, and if so, we return 1. Otherwise, we calculate the factorial by multiplying n with the factorial of n - 1.

Kotlin Editor:

Previous: Check palindrome string.
Next: Find maximum element in array.