Question: Reference-Based Queue Implementation (1 of 4) public class QueueReferenceBased implements QueueInterface f private Node lastNode; public QueueReferenceBased) las tNode null; end default constructor code about

f private Node lastNode; public QueueReferenceBased) las tNode null; end default constructor

code about quene // queue operations public boolean isEmpty) return lastNodenull end

isEmpty public void dequeueALO Las tNode-null ) end dequeueALL

Reference-Based Queue Implementation (1 of 4) public class QueueReferenceBased implements QueueInterface f private Node lastNode; public QueueReferenceBased) las tNode null; end default constructor code about quene // queue operations public boolean isEmpty) return lastNodenull end isEmpty public void dequeueALO Las tNode-null ) end dequeueALL

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