<|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
Name the commonly used data structure for implementing stacks.
<|im_end|>
<|im_start|>assistant
The commonly used data structure for implementing stacks is a linked list.<|im_end|>
