What is a potential drawback of using a linked list-based stack compared to an array-based stack?
Limited stack size
Inability to handle dynamic resizing
Increased time complexity for push and pop operations
Higher memory usage due to the overhead of storing pointers
What is the primary role of a stack in expression evaluation?
Evaluating the precedence of operators.
Performing arithmetic calculations on operands.
Storing the variables used in the expression.
Converting infix expressions to postfix.
What is the primary difference between 'pop' and 'peek' operations on a stack?
'Pop' removes the top element, while 'peek' only retrieves its value without removing it.
'Pop' retrieves the top element's value, while 'peek' removes it from the stack.
'Pop' and 'peek' are interchangeable terms for the same operation.
'Pop' is used for stacks, while 'peek' is used for queues.
In postfix evaluation, what action is taken when an operand is encountered?
It triggers the evaluation of operators on the stack.
It is immediately evaluated.
It is ignored.
It is pushed onto the stack.
In a stack implemented using a singly linked list, which end of the list typically represents the top of the stack?
It can be either the head or the tail, depending on the implementation.
Middle
Tail
Head
Which type of linked list allows for more efficient push and pop operations at both ends, making it suitable for implementing a stack?
Singly linked list
Doubly linked list
Circular linked list
Both singly and doubly linked lists are equally efficient.
In a stack implemented using a linked list, where does the 'push' operation add the new element?
At a specific index in the linked list.
At the beginning of the linked list.
At the end of the linked list.
It depends on the data being inserted.
What is the result of evaluating the prefix expression '-+5*234'?
-17
17
7
-7
In the context of expression parsing, what role does a stack play?
Optimizing the expression for better performance.
Evaluating the parsed expression directly.
Storing the lexical tokens identified in the expression.
Generating machine code from the expression.
In maze-solving algorithms, how does the use of a stack differ between depth-first search (DFS) and breadth-first search (BFS)?
DFS uses a stack to explore as deeply as possible before backtracking, while BFS uses a queue to explore all neighbors at a given level.
Both DFS and BFS use stacks identically; the difference lies in how they mark visited nodes.
DFS uses a stack only if the maze is solvable, while BFS always uses a queue.
BFS uses a stack to prioritize unexplored paths, while DFS uses a queue to systematically explore all directions.