Push and pop values to see LIFO behavior with two implementations side by side. Try the balanced parentheses checker to see stacks in action.
Push
Pop / Peek
Parentheses
Presets
Normal
0
Size
10
Capacity
—
Last Op
Insight: Same LIFO behavior, different underlying storage. Array gives O(1) amortized push with cache-friendly memory. Linked list gives O(1) worst-case push with no capacity limit.