Stack Using Two Queues Problem

Stack Using Two Queues Problem — ExecCode Easy DSA Practice

Solve the Stack Using Two Queues problem on ExecCode. Free online easy DSA practice in Stacks & Queues. Write and run code in Java, C++, Python — no signup required to run.

Problem description

Description You are given the input needed to solve Stack Using Two Queues. Your task is to compute the required answer and return one output line per command that produces output. Events arrive in order, but some answers depend on remembering the most recent unresolved item. Stack Using Two Queues is about processing those events without losing their order. data: operation lines.

Examples

Input {"data": "push 1\npush 2\ntop\npop\nempty"}; Output 2 2 false. Input {"data": "push 1\npop\nempty"}; Output 1 true. Input {"data": "push 1\npush 2\npush 3\npop\npop\ntop"}; Output 3 2 1

Constraints

LIFO via two queues

Practice Stack Using Two Queues free on ExecCode. Browse DSA problems, topic map, and placement guides.