[FEAT]: Create a factorial calculator script

[coxmars]

📘 Description

We need to implement a script that calculates the factorial of a given number. The factorial (n!) is the product of all positive integers less than or equal to n. This will serve as a utility function that could be useful in various mathematical calculations within our project.

✅ Acceptance Criteria

• Create a function that accepts a positive integer as input
• Implement proper input validation (non-negative integers only)
• Return the calculated factorial value
• Include error handling for invalid inputs

🌎 References

• Mathematical definition of factorial

📜 Additional Notes

• ⚠ Do not apply until the ODBoost begins.
• ⚠ Read our contribution guidelines before applying.

[josephpdf]

Hello @coxmars
My name is Joseph Poveda, I am a member of the Dojo Coding community, where I am learning to contribute to open source. I have already made several contributions to different projects in different ecosystems, where I have been able to apply my knowledge in programming from front end, back end and documentation.

To solve this issue I would investigate and follow these steps to solve it:

1. Function Design:

   • Create a function that takes a positive integer as input.
   • Implement logic to calculate the factorial using an iterative or recursive approach.

2. Input Validation:

   • Ensure the input is a non-negative integer.
   • Return an error message for invalid inputs.

3. Error Handling:

   • Include exceptions to manage edge cases, such as non-integer or negative values.

4. Testing:

   • Test the function with a range of values, including edge cases like 0 and 1.

[GideonBature]

Could I take over this issue?

I am a software engineer with working knowledge of Cairo. I will send my first PR in 48 hours.

[ChrisFernandezVivas]

hey im dojo member

ETA : 3 Days

how to solve?

1-research about factorial number example 4!
2- implement a function like recursive function for calculate this factorial
3- test the function
4- PR ready

thank you

[Nityam573]

Can I get assigned to this task @coxmars
I am proficient in cairo projects
View my Profile:
https://app.onlydust.com/u/Nityam573

[armaanansari121]

May I take this up? I've been a Competitive Programmer, I'm specialist at codeforces and I'm also good at cairo. So this would be perfect issue for me.

ETA: 24 hrs

[Jagadeeshftw]

Proposal to Work on the Issue

I would be delighted to contribute to this issue, as I have extensive experience with Cairo programming and developing decentralized applications on StarkNet.

Estimated Timeline

I anticipate delivering a working solution within the next 24 hours. Please let me know if I can proceed.

Looking forward to contributing and collaborating!

Best regards,
Jagadeesh B

[ryzen-xp]

Hi,
I am proficient Blockchain developer expert in Cairo , Rust and Solidity and also in web development.
I have contributed many starknet project and more .
please /assign this issue .
Thank You !!

[savagechucks]

Hi. Can i take on this issue?

[Michaelkingsdev]

Could I grab this task?

[Benjtalkshow]

I am a Full Stack Developer specializing in Next.js, TypeScript, Node.js, Cairo and Rust . With over 50 contributions across projects in the OnlyDust ecosystem, I’ve developed strong proficiency in delivering high-quality solutions and resolving complex issues within tight deadlines. My experience spans frontend, backend, smart contracts, and the optimization and maintenance of scalable codebases.
I can handle this task. Kindly assign.

[RomThpt]

I’d love to work on this task and contribute to the project. I’ll be participating in the ETHDenver hackathon, and I see this as a great opportunity not only to help improve the project but also to grow my skills by tackling this issue.

[ShantelPeters]

Can I work on this, please?