{"id":"stack-queue-single-queue","text":"MyStack uses exactly one deque, satisfying the LeetCode follow-up constraint for single-queue implementation.","truth_value":"IN","source":"entries/2026/06/06/implement-stack-using-queues-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"stack-queue-single-queue","truth_value":"IN","reason":"premise"}]}}