Frequently Asked Questions
Everything you need to know about the Stack & Queue Visualizer.
What's the difference between a stack and a queue?
A stack is LIFO (last in, first out); a queue is FIFO (first in, first out) โ this tool visualizes both.
What operations can I perform?
Push, pop, and peek for stacks; enqueue, dequeue, and peek for queues.
Is it free?
Completely free, no sign-up or limits.
What happens if I pop/dequeue an empty structure?
Underflow is handled with a clear message, not a crash.
Can I simulate a fixed-size structure?
Yes, an optional capacity limit demonstrates overflow behavior explicitly.
Is there a history of operations?
Yes, a running log shows every operation performed and the resulting state.
Are there example use cases built in?
Yes, guided presets like a balanced-parentheses checker (stack) and a print-queue simulation (queue).
Is my data stored?
No; everything runs in your browser.
Can I reset and start over?
Yes, a reset button clears the structure.
Does it work on mobile?
Yes, fully responsive with no overflow.