{"id":"increasing-bst-nulls-left-pointers","text":"Every visited node has .left set to None after processing; without this, the restructured tree would contain cycles or stale references.","truth_value":"IN","source":"entries/2026/06/06/increasing-order-search-tree-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"increasing-bst-nulls-left-pointers","truth_value":"IN","reason":"premise"}]}}