MCQ
Q.
Consider these functions:
push() : push an element into the stack
pop() : pop the top-of-the-stack element
top() : returns the item stored in top-of-the-stack-node
What will be the output after performing these sequence of operations
push(20);
push(4);
top();
pop();
pop();
pop();
push(5);
top();
push() : push an element into the stack
pop() : pop the top-of-the-stack element
top() : returns the item stored in top-of-the-stack-node
What will be the output after performing these sequence of operations
push(20);
push(4);
top();
pop();
pop();
pop();
push(5);
top();
Correct Answer: D
None.