Stacks And Queues
Stack Operations
Visualize LIFO behavior with push, pop, and peek operations before moving into parentheses parsing and monotonic stack patterns.
O(1) per operation
LIFO: last in, first outoperation: push
Top
empty stack
Base
Time
O(1) per push
Space
O(n)
Step Note
Start with an empty stack. The top is the last pushed item.
function pushAll(values: number[]) {
const stack = []
for (const value of values) {
stack.push(value)
}
return stack
}