Welcome to the Stacks and Queues MCQs Page
Dive deep into the fascinating world of Stacks and Queues with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Stacks and Queues, a crucial aspect of Data Structures and Algorithms. In this section, you will encounter a diverse range of MCQs that cover various aspects of Stacks and Queues, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Data Structures and Algorithms.
Check out the MCQs below to embark on an enriching journey through Stacks and Queues. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Data Structures and Algorithms.
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Stacks and Queues MCQs | Page 22 of 25
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(head and trail are dummy nodes to mark the end and beginning of the list, they do not contain any priority or element)
a)
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++;
}
}
b)
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++;
}
}
c)
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++;
}
}
d) None of the mentionedpublic Object delete_key()
{
if(count == 0)
{
System.out.println("Q is empty");
System.exit(0);
}
else
{
Node cur = head.getNext();
Node dup = cur.getNext();
Object e = cur.getEle();
head.setNext(dup);
count--;
return e;
}
}Suggested Topics
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