This command will set the current array index to the first item in the array queue.

ARRAY INDEX TO QUEUE Array Name(0)

Array Name(0

Integer
The name of the array followed by a pair of brackets ( ). You can also insert a value of zero, i.e. arrayname(0)

This command does not return a value.

Queues are a first in, first out data structure. You can imagine a queue as a line of people waiting for the bus. The last item of data added will be the last item of data to come off the queue.

EXAMPLE=dim a() as integer

empty array a()



print "Add 5 items to the queue"

for i=1 to 5

   n = rnd(1000)

   print "  Adding "; n; " to the queue"

   add to queue a()

   a() = n

next i



print

PrintQueue()

print

print "Pop 2 items from the queue"



for i=1 to 2

   print "  Removing "; a(0); " from the queue"

   remove from queue a()

next i



print

PrintQueue()

print



print "Add 5 more entries to the queue"

for i=0 to 4

   n = rnd(1000)

   print "  Adding "; n; " to the queue"



   add to queue a()

   a() = n

next i



print

PrintQueue()

print



print "Now remove items until the queue is empty"

while array index valid( a() )

   print "  Removing "; a(0); " from the queue"

   remove from queue a()

endwhile



print

PrintQueue()



wait key

end



function PrintQueue()

   if array count( a() ) >= 0

      print "The queue has "; array count( a() )+1; " items"

      for i=0 to array count( a() )

         print "  Item "; i; " = "; a(i)

      next i

   else

      print "The queue is empty"

   endif

endfunction

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