{"id":"percentage-no-empty-string-guard","text":"`percentageLetter` has no guard against empty-string input and will raise `ZeroDivisionError` — it relies on LeetCode's constraint that `len(s) >= 1`.","truth_value":"IN","source":"entries/2026/06/06/percentage-of-letter-in-string-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"percentage-no-empty-string-guard","truth_value":"IN","reason":"premise"}]}}