{"id":"bfs-level-snapshot-pattern","text":"`averageOfLevels` partitions BFS into discrete levels by snapshotting `len(queue)` before each inner loop, not by using sentinels or multiple queues.","truth_value":"IN","source":"entries/2026/06/06/average-of-levels-in-binary-tree-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"bfs-level-snapshot-pattern","truth_value":"IN","reason":"premise"}]}}