If you represent an arithmetic expression in postfix notation using a stack, what operation would you perform when encountering an operand (a number)?
Pop the top two elements from the stack, perform the operation, and push the result back onto the stack.
Push the operand onto the stack.
Ignore the operand.
Check if the stack is empty.
In the context of expression parsing, what role does a stack play?
Evaluating the parsed expression directly.
Generating machine code from the expression.
Optimizing the expression for better performance.
Storing the lexical tokens identified in the expression.
Which type of linked list allows for more efficient push and pop operations at both ends, making it suitable for implementing a stack?
Doubly linked list
Circular linked list
Both singly and doubly linked lists are equally efficient.
Singly linked list
What is the result of evaluating the prefix expression '-+5*234'?
7
-7
-17
17
Imagine a stack is used to track function calls in a recursive program. What happens to the stack when a function returns?
The stack remains unchanged.
The entire stack is cleared.
The corresponding function call is pushed onto the stack.
The corresponding function call is popped from the stack.
In postfix evaluation, what action is taken when an operand is encountered?
It is immediately evaluated.
It is ignored.
It triggers the evaluation of operators on the stack.
It is pushed onto the stack.
What is the primary role of a stack in expression evaluation?
Evaluating the precedence of operators.
Performing arithmetic calculations on operands.
Converting infix expressions to postfix.
Storing the variables used in the expression.
During the infix to postfix conversion of the expression 'A+B*C-D/E', which operator would be pushed onto the stack first?
/
What is a potential drawback of using a linked list-based stack compared to an array-based stack?
Inability to handle dynamic resizing
Increased time complexity for push and pop operations
Higher memory usage due to the overhead of storing pointers
Limited stack size
What is the time complexity of the 'peek' operation in a well-implemented stack?
O(log n)
O(n)
O(1)
O(n log n)