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<pre align="left"><b><font size="4" face="Arial">
<font color="#FF0033" size="5">ABSTRACT DATA TYPE</font>
structure<font color="#FF0033"> Queue </font>is
<font color="#0033CC">object:</font> a finite ordered list with zero or more elements.
<font color="#0033CC">functions:</font>
for all queue <img src="../TEXT2/image/Image4.gif" width="13" height="13"> Queue, item <img src="../TEXT2/image/Image4.gif" width="13" height="13"> element,
max_queue_size <img src="../TEXT2/image/Image4.gif" width="13" height="13"> positive integer
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<font color="#FF0099">Queue CreateQ(max_queue_size) </font>::=
create an empty queue whose maximum size is
max_queue_size
<font color="#FF0099">Boolean IsFullQ(queue, max_queue_size)</font> ::=
if ( number of elements in queue == max_queue_size )
return TRUE
else return FALSE
<font color="#FF0099"> Queue AddQ(queue, item) </font>::=
if ( IsFullQ(queue) ) queue_full
else insert item at rear of queue and return queue
<font color="#FF0099">Boolean IsEmptyQ(queue) </font> ::=
if ( queue == CreatQ(max_queue_size) )
return TRUE
else return FALSE
<font color="#FF0099"> Element DeleteQ( queue) </font> ::=
if ( IsEmptyQ( queue ) ) return
else remove and return the item at front of queue
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