Queue using Stack
Detailed guide and Python implementation for the 'Queue using Stack' problem.
Problem Statement
Write a function execute_queue_using_stacks(operations) that simulates a Queue using two Stacks. The input is a list of tuples operations where each tuple is either ("enqueue", val) or ("dequeue",). Return the list of dequeued values.
- •0 <= len(operations) <= 1000
Examples
operations = [("enqueue", 1), ("enqueue", 2), ("dequeue",), ("enqueue", 3), ("dequeue",)][1, 2]
Enqueued elements are retrieved in FIFO order using LIFO stack operations.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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