{"id":"missing-ranges-cursor-not-sentinel","text":"`find_missing_ranges` uses a `next_expected` cursor to detect gaps rather than mutating the input by prepending `lower-1` / appending `upper+1` — the input list is never modified or copied.","truth_value":"IN","source":"entries/2026/06/06/missing-ranges-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"missing-ranges-cursor-not-sentinel","truth_value":"IN","reason":"premise"}]}}