How do I define an associative array of queues?

In reply to Rajaraman Rak7:

Hi dave,
I got this point.
Thank you for your immediate response.

Hi Dave,
When we use a queue of assoc array , how to use assoc functions like exists?

//in a method, want to check if a memory element exists?
if (assoc_queue[1].exists(memory[input_val]) )

Error: Could not find member ‘exists’ assoc_queue

I am looking for, how to use assoc functions , when we use queue of assoc array.
Will you please show some example code.
Thanks in adavance
SV