{"id":"digit-extraction-prefers-mod-arithmetic","text":"Multiple solutions (`sum-of-digits-in-base-k`, `sum-of-digits-in-the-minimum-number`) extract digits via `% 10` / `// 10` loops rather than string conversion, avoiding allocation.","truth_value":"IN","source":"entries/2026/06/06/sum-of-digits-in-base-k-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"digit-extraction-prefers-mod-arithmetic","truth_value":"IN","reason":"premise"}]}}