<|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
Explain the differences between an array and an arraylist in Java.
<|im_end|>
<|im_start|>assistant
An array is a static data structure, while an array list is a dynamic data structure. An array has a fixed size which cannot be changed, while an array list can be dynamically resized. Elements in an array must be of the same type, while an array list can store elements with different types. Arrays can have multiple dimensions, while array lists can only have one dimension. Furthermore, arrays are much faster to access than array lists.<|im_end|>
