{"id":"circular-sentence-no-split","text":"`is_circular` checks circularity by scanning for spaces as word boundaries rather than calling `str.split()`, achieving O(n) time and O(1) auxiliary space.","truth_value":"IN","source":"entries/2026/06/06/circular-sentence-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"circular-sentence-no-split","truth_value":"IN","reason":"premise"}]}}