Unlock DeepSeek Prompt Library: From Code Refactoring to AI‑Powered Generation

DeepSeek officially released a library of 13 commonly used prompts for AI developers and users with some programming background.

Reading Guide

Prompt : The user‑sent instruction to DeepSeek, including SYSTEM and USER commands.

SYSTEM command : Pre‑written system instruction that defines DeepSeek’s role.

USER command : Direct instruction for DeepSeek to answer, possibly based on a preceding SYSTEM command.

DeepSeek sample output : Example response generated by DeepSeek.

API code mode : Code snippets for developers; non‑developers can ignore.

1. Code Refactoring

Modify code to fix bugs, add comments, or improve performance.

Prompt

USER command

下面这段的代码的效率很低，且没有处理边界情况。请先解释这段代码的问题与解决方法，然后进行优化：</code><code>def fib(n):
    if n <= 2:
        return n
    return fib(n-1) + fib(n-2)

DeepSeek sample output – Problem Analysis

Redundant calculations due to naive recursion.

Missing handling for n < 0 (negative inputs).

Potential recursion‑depth limit for large n.

Solution

Use memoization.

Handle boundary cases.

Replace recursion with iteration.