I'm stumped. Worked on this problem for over three hours. I created an

array:

current_state = [3, 1, 6, 5, 2, 0, 4, 7, 8]

and

puts "Current_state.index(0) = " + current_state.index(0).to_s displays

a 5, as would be expected

puts "Length of current_state array = " + current_state.length.to_s

displays a 9, as expected

I defined a Priority Queue to create an ascending queue with:

open_queue = PQueue.new(proc{|x,y| x[0][0]<y[0][0]})

Then I push it into the Priority Queue with four other objects:

open_queue.push([[hv], [node_level], [direction_of_prior_move],

[current_state], [parent_node]])

but when later on I pop it out of the open_queue

removed_entry = []

removed_entry = open_queue.pop

and then move it back to current_state

current_state = removed_entry[3].dup <== I've tried this with

and without the dup

current_state appears to be an array with one entry of "316520478"

puts "Current_state = " + current_state.to_s ==>

316520478 so clearly this is the value it has

puts "Class of Current_state = " + current_state.class.to_s ==>

Array so clearly it is still an array

If I execute the index function again it gives a nil value, as you would

expect with one 9 digit number in the array

I've tried with and without the quotes:

puts "Current_state.index(0) = " + current_state.index("0").to_s

and

puts "Current_state.index(0) = " + current_state.index(0).to_s

and

puts "Length of current_state array = " + current_state.length.to_s

displays a value of 1, confirming that it has become a single nine digit

number. If the updated array has only one entry in it, of course it would

not be a 0 or "0" or any value but even "316520478" returns nothing, not a

zero, which is strange.

I need to have the current_state array stay as an array of 9 single digit

numbers.

What am I ignoring? How am I changing the nature of the current_state array

when I push or pop it into or from the queue? I need to have an array with

9 separate digits in it so I can index them.

Help!

No Sam