Question
a)
public Object deleteRear() throws emptyDEQException
{
if(isEmpty())
throw new emptyDEQException("Empty");
else
{
Node temp = head.getNext();
Node cur = temp;
while(temp.getNext() != trail)
{
temp = temp.getNext();
cur = cur.getNext();
}
Object e = temp.getEle();
cur.setNext(trail);
size--;
return e;
}
}
b)
public Object deleteRear() throws emptyDEQException
{
if(isEmpty())
throw new emptyDEQException("Empty");
else
{
Node temp = head.getNext();
Node cur = head;
while(temp != trail)
{
temp = temp.getNext();
cur = cur.getNext();
}
Object e = temp.getEle();
cur.setNext(trail);
size--;
return e;
}
}
c)
public Object deleteRear() throws emptyDEQException
{
if(isEmpty())
throw new emptyDEQException("Empty");
else
{
Node temp = head.getNext();
Node cur = head;
while(temp.getNext()!=trail)
{
temp = temp.getNext();
cur = cur.getNext();
}
Object e = temp.getEle();
cur.setNext(trail);
size--;
return e;
}
}
d) None of the mentioneda.
a
b.
b
c.
c
d.
None of the mentioned
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Q. Which of the following can be used to delete an element from the rear end of the queue?
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