<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Suggest a way of sorting an array of integers A in descending order.
A = [4, 7, 2, 9, 6];<|im_end|>
<|im_start|>assistant
A.sort(reverse=True);<|im_end|>
