Fork, Commit, Merge - Easy Issue (Scala)

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Valutazione

Difficoltà
2/5
Tempo stimato
1-3 ore
Idoneità per principianti
88/100
Tipo di issue
Funzionalità
Chiarezza
Specificata chiaramente
Stato di attività
Attiva
Stack tecnologico
scala
Ambito
cli

Direzione di ricerca

Crea un nuovo file in tasks/scala/easy/FactorialCalculator.scala, seguendo i passaggi di fork e pull request del README. La issue chiede un prompt per un intero non negativo, un fattoriale ricorsivo che usi BigInt e il formato di output 'Factorial of [number] = [result]'. Verificalo compilando con scalac ed eseguendo con scala FactorialCalculator, poi conferma che gli input negativi e non numerici richiedano di nuovo il valore.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

easy first-contributor first-contributors good first issue help wanted scala up-for-grabs

Fork, Commit, Merge - Easy Issue (Scala)

Scala Factorial Calculator

Note: You don't have ask permission to start solving the issue or get assigned, since these issues are supposed to be always open for new contributors. The actions-user bot will reset the file back to previous state for the next contributor after your commit is merged. So you can just simply start working with the issue right away!

Navigate to the tasks/scala/easy directory from the root of your project.

Then open a file called FactorialCalculator.scala.

Objective:

Write a Scala program to compute the factorial of a number provided by the user.

Requirements:

Prompt Input:

  • When the program runs, it should prompt the user to enter a number.
  • Ensure that the input is a non-negative integer. Handle invalid inputs gracefully by informing the user and prompting for a correct value.

Functionality:

  • The program must calculate the factorial of the provided number.
  • Factorial of 0 is 1.
  • Use recursion for the factorial calculation.

Display Output:

  • Once calculated, display the result in the format: Factorial of [number] = [result].

Error Handling:

  • If a user provides a negative number, or a non-numeric input, inform them of the error and prompt them to enter a valid input.

Clean Code:

  • Ensure the code is written cleanly, is well-organized, and includes comments explaining major sections or logic.
  • Variables and functions should have descriptive names.
Hints:

BigInt can be used in Scala to handle very large numbers, which is useful for factorial computations.

To run the program, first you need to compile the code using this command:

scalac tasks/scala/easy/FactorialCalculator.scala

That will create compiled file into the directory, which you can run with this command:

scala FactorialCalculator

If the program works as requested in the task, you are ready to make a pull request!

To work with this issue, you need to have Scala installed to your local machine.
Check out README.md for more instructions of installing Scala. Also there are detailed instructions of how to make a pull request.

Feel free to ask any questions here if you have some problems!

Also, kindly give this project a star to enhance its visibility for new developers!
Lingua principale
CSS
Stelle
511
Fork
2.6k
Merge medio
19h 53m
PR unite (30g)
102

Preparare l'ambiente

Come iniziare

  1. Leggi tutta la issue e poi la guida ai contributi del progetto.
  2. Commenta sulla issue per dire che te ne occupi tu — evita che due persone facciano lo stesso lavoro.
  3. Fai un fork del repository e lavora su un branch.
  4. Apri una pull request che faccia riferimento al numero della issue.

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