In my program I need to construct a priority queue that sorts ascending.

The basic idea can be expressed in the following simple code that uses a

Priority Queue concept. See:

http://www.math.kobe-u.ac.jp/~kodama/tips-ruby-pqueue.html

1 require “pqueue”

2

3 pq=PQueue.new(proc{|x,y| x<y})

4 pq.push(2)

5 pq.push(3)

6 pq.push(4)

7 pq.push(3)

8 pq.push(2)

9 pq.push(4)

10 print “size:”+pq.size.to_s+“\n”

11 print “each_pop: "

12 pq.each_pop{|x| print x.to_s+” "}

13 print “\n”

This is clean and simple to understand. But I need to be able to put

into

the queue several components per push to make an entire record object.

I

need to have three components: an integer heuristic value, followed by

two 9

digit configuration patterns, such as

pq.push([2], [123456780], [123456708]) But this gives me an argument

error

message:

pqueue.rb:4:in `push’: wrong number of arguments (3 for 1)

(ArgumentError) from pqueue.rb:4

or pq.push(2_123456780_123456708) ignores the underscore separators and

runs

the 3 parts together as one long number.

Still learning Ruby and none of the books address multiple dimensional

arrays very well. Is the Priority Queue not able to handle

multi-dimensional arrays? Can this code be modified to allow

multi-elements

in each push and still sort on the first element?

If I cannot use pqueue, is there another required library of methods

that

will work with three elements in each array entry?

Thanks in advance to those of you who can help. And thanks to all who

help

out on this forum. Very good forum.

No Sam