In a circular queue, how do you increment the rear end of th...

MCQ

In a circular queue, how do you increment the rear end of the queue?

rear++

(rear+1) % CAPACITY

(rear % CAPACITY)+1

rear

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A data structure where elements can be added or removed at either end but not in the middle is called

linked lists

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dequeue

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What is a dequeue?

A queue with insert/delete defined for both front and rear ends of the queue

A queue implemented with a doubly linked list

A queue implemented with both singly and doubly linked lists

None of the mentioned

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A data structure where elements can be added or removed at either end but not in the middle

Linked lists

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MCQ

Select the appropriate code that inserts elements into the list based on the given key value.(head and trail are dummy nodes to mark the end and beginning of the list, they do not contain any priority or element)

public void insert_key(int key,Object item) 
{
	if(key<0)
	{
		Systerm.our.println("invalid");
		System.exit(0);
	}
	else
	{
		Node temp = new Node(key,item,null);
		if(count == 0)
		{
			head.setNext(temp);
			temp.setNext(trail);
		}
		else
		{
			Node dup = head.getNext();
			Node cur = head;
			while((key>dup.getKey()) && (dup!=trail))
			{
				dup = dup.getNext();
				cur = cur.getNext();
			}
			cur.setNext(temp);
			temp.setNext(dup);
		}
		count++;
	}
}

public void insert_key(int key,Object item) 
{
	if(key<0)
	{
		Systerm.our.println("invalid");
		System.exit(0);
	}
	else
	{
		Node temp = new Node(key,item,null);
		if(count == 0)
		{
			head.setNext(temp);
			temp.setNext(trail);
		}
		else
		{
			Node dup = head.getNext();
			Node cur = dup;
			while((key>dup.getKey()) && (dup!=trail))
			{
				dup = dup.getNext();
				cur = cur.getNext();
			}
			cur.setNext(temp);
			temp.setNext(dup);
		}
		count++;
	}
}

public void insert_key(int key,Object item) 
{
	if(key<0)
	{
		Systerm.our.println("invalid");
		System.exit(0);
	}
	else
	{
		Node temp = new Node(key,item,null);
		if(count == 0)
		{
			head.setNext(temp);
			temp.setNext(trail);
		}
		else
		{
			Node dup = head.getNext();
			Node cur = head;
			while((key>dup.getKey()) && (dup!=trail))
			{
				dup = dup.getNext();
				cur = cur.getNext();
			}
			cur.setNext(dup);
			temp.setNext(cur);
		}
		count++;
	}
}

public void insert_key(int key,Object item) 
{
	if(key<0)
	{
		Systerm.our.println("invalid");
		System.exit(0);
	}
	else
	{
		Node temp = new Node(key,item,null);
		if(count == 0)
		{
			head.setNext(temp);
			temp.setNext(trail);
		}
		else
		{
			Node dup = head.getNext();
			Node cur = head;
			while((key>dup.getKey()) && (dup!=trail))
			{
				dup = cur
				cur = cur.getNext();
			}
			cur.setNext(dup);
			temp.setNext(cur);
		}
		count++;
	}
}

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What is the term for inserting into a full queue known as?

overflow

underflow

null pointer exception

all of the mentioned

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