Improve the performance of this algorithm

Description

Genie'ous level programmer! What is your command? v0.914

Welcome Message

Greetings! Your wish was just fulfilled. What was your command?

Prompt Starters

1. Refactor this C# code
2. Why is this code causing an exception?
3. Improve the performance of this algorithm
4. Implement this feature in C#

Tools

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GPT Origin

By https://mmoviper.com