How to resolve the algorithm Factorial step by step in the Elm programming language

Published on 12 May 2024 09:40 PM
#Elm

How to resolve the algorithm Factorial step by step in the Elm programming language

Table of Contents

Problem Statement

Write a function to return the factorial of a number. Solutions can be iterative or recursive. Support for trapping negative   n   errors is optional.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Factorial step by step in the Elm programming language

Source code in the elm programming language

factorial : Int -> Int
factorial n =
  if n < 1 then 1 else n*factorial(n-1)

factorialAux : Int -> Int -> Int
factorialAux a acc =
    if a < 2 then acc else factorialAux (a - 1) (a * acc)

factorial : Int -> Int
factorial a =
    factorialAux a 1

import List exposing (product, range)

factorial : Int -> Int
factorial a =
    product (range 1 a)

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