What is recursion in Scala function How does it works

Question

Can anyone help me to create recursion function in Scala?

Answer 1

Hey,

A Scala function involves recursion when it makes a call to itself. Let’s take an example:

scala> def factorial(n:Int):Int={

| if(n==1)

| {

| return 1

| }

| n*factorial(n-1)

| }

factorial: (n: Int)Int

scala> factorial(6)

res0: Int = 720

scala> factorial(1)

res1: Int = 1

scala> factorial(4)

res2: Int = 24

scala> factorial(10)

res4: Int = 3628800

This Scala function correctly calculates the factorial of an integer one or greater.