Create Factorial.java

[yandrade1305]

What type of PR is this? (check all applicable)

• [ ] 🚀 Added Name
• [x] ✨ Feature
• [ ] 🌟 stared the repo
• [ ] 🐛 Grammatical Error
• [ ] 📝 Documentation Update
• [ ] 🚩 Other

Description

Added Java calculator for Factorial using recursion (includes negative numbers) :D

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https://github.com/yandrade1305