<|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
Write a C# program to filter the entities from a given array.
Array = [0, "Apple", 1, "Orange", 2, "Banana", 3, "Mango"].
Condition = Entity should be a number<|im_end|>
<|im_start|>assistant
int[] entities = Array.OfType<int>().ToArray();<|im_end|>
