Why is it generally more efficient to check if a stack is empty before popping an element?
It doesn't make a significant difference in terms of efficiency.
To avoid unnecessary computations within the pop operation.
To ensure the stack pointer is correctly updated.
To prevent potential errors or exceptions if the stack is empty.
How does a stack implemented using a linked list handle overflow compared to an array-based implementation?
Both implementations handle overflow similarly.
Linked list implementation avoids overflow as long as memory is available.
Linked list implementation prevents overflow by overwriting existing elements.
Linked list implementation also suffers from overflow.
In which scenario would an array-based stack be a more suitable choice than a linked list-based stack?
When frequent insertions and deletions are required in the middle of the stack.
When the stack size is known in advance and relatively small.
When the maximum size of the stack is unknown.
When dealing with a very large dataset where memory usage is critical.
What is the primary disadvantage of using stacks compared to other data structures?
Slow insertion and deletion at the end
High memory consumption
Inability to store duplicate elements
Limited access to elements (only top)
In the context of the 'Next Greater Element' problem, what does the term 'next greater' refer to?
The element that is lexicographically greater.
The element that is both to the right and has a larger value.
The element with the next highest value in a sorted order.
The element that appears most frequently after the current element.
If you implement a stack using a dynamically allocated array, what is the time complexity of pushing an element in the worst-case scenario if you need to resize the array?
O(n log n)
O(log n)
O(n)
O(1)
What is the time complexity of pushing an element onto a stack implemented using a linked list, assuming the push operation is implemented efficiently?
In the context of memory allocation within a program, what type of stack is used?
Queue
Linked List
Call Stack
Heap
How does a stack help in converting infix expressions to postfix?
By eliminating the need for parentheses
By prioritizing operators based on precedence
By reversing the order of operands
By directly translating the expression
How do stacks and heaps differ in terms of element ordering?
Both stack and heap maintain elements in sorted order, but with different sorting algorithms
Stack follows LIFO order, while heap maintains a partial ordering
Stack follows FIFO order, while heap has no specific order
Stack has no specific order, while heap maintains elements in sorted order