{"id":"vowel-substrings-quadratic-by-design","text":"`count_vowel_substrings` is O(n²) worst-case by design, acceptable given the problem's n ≤ 100 constraint — an O(n) sliding-window solution exists but is not used here","truth_value":"IN","source":"entries/2026/06/06/count-vowel-substrings-of-a-string-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"vowel-substrings-quadratic-by-design","truth_value":"IN","reason":"premise"}]}}