{"id":"digit-extraction-uses-modular-arithmetic","text":"Digit extraction across the repo uses `% 10` / `//= 10` modular arithmetic exclusively, avoiding `str()` conversion and intermediate string allocations.","truth_value":"IN","source":"entries/2026/06/06/difference-between-element-sum-and-digit-sum-of-an-array-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"digit-extraction-uses-modular-arithmetic","truth_value":"IN","reason":"premise"}]}}