In the standard queue-based method that uses two FIFO Queues to implement LIFO behavior, how many queues are used?
The standard two-queue implementation uses two FIFO queues to simulate the LIFO behavior of a stack. Other implementations can use one queue, so the wording is explicitly tied to the standard two-queue method.
In a Priority Queue, how are elements dequeued?
Priority queues dequeue items based on assigned priority values rather than insertion order.
What can happen if a recursive function has no reachable base case?
Without a reachable terminating condition, recursive calls can continue indefinitely until the available call-stack space is exhausted. The exact runtime error depends on the programming language.
What is an Output-Restricted Deque?
An Output-Restricted Deque permits element entry at both front and rear, but restricts removals to a single end.
What is the naive recursive time complexity for computing the Nth Fibonacci number?
The naive recursive formula Fib(N) = Fib(N-1) + Fib(N-2) branches twice at each step, taking exponential O($2^N)$ time due to overlapping subproblems.