{"id":"tree-to-list-strips-trailing-nones","text":"`tree_to_list` removes trailing `None` values from its BFS serialization, making `[1, None, 2]` and `[1, None, 2, None, None]` equivalent representations.","truth_value":"IN","source":"entries/2026/06/06/invert-binary-tree-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"tree-to-list-strips-trailing-nones","truth_value":"IN","reason":"premise"}]}}