Factorial in Wren

Published on 21 January 2025 (Updated: 21 January 2025)

Welcome to the Factorial in Wren page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

import "os" for Process

var args = Process.arguments

if (args.count < 1 || args[0].count < 1) {
  System.print("Usage: please input a non-negative integer")
  Fiber.suspend()
}

var n = Num.fromString(args[0])
if (n == null || n < 0) {
  System.print("Usage: please input a non-negative integer")
  Fiber.suspend()
}

if (n <= 1) {
  System.print(1)
  Fiber.suspend()
}

var res = 1
for (i in 1..n) {
  res = res * i
}

System.print(res)

Factorial in Wren was written by:

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

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How to Run the Solution

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