factorial

[yegor256]

Let's calculate factorial

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PR-Codex overview

The focus of this PR is to refactor the code to replace the A class with Factorial class to calculate factorial efficiently.

Detailed summary

• Renamed A class to Factorial class
• Updated method logic to calculate factorial efficiently
• Changed method invocation from new A().get() to new Factorial().get()

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[DIY0R]

Using a static method would be better here because creating an object with each recursive call fills up the stack, reducing efficiency.

[yegor256]

@DIY0R this is the point of the optimization there -- to replace object with static method automatically