<|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
Change the value of the third element in the following array.
int[] arr = {1, 3, 4, 5};<|im_end|>
<|im_start|>assistant
arr[2] = 10;<|im_end|>
