{"id":"some-solutions-mutate-input","text":"Some solutions mutate their input arguments in place (e.g., `can_construct` sorts the array, `canPlaceFlowers` writes to the flowerbed list) while others are pure (e.g., `digitSum` rebinds without mutation). There is no repo-wide convention — each solution's mutation behavior must be checked individually.","truth_value":"IN","source":"entries/2026/06/06/can-make-arithmetic-progression-from-sequence-solution.md, entries/2026/06/06/can-place-flowers-solution.md, entries/2026/06/06/calculate-digit-sum-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":"some-solutions-mutate-input","truth_value":"IN","reason":"premise"}]}}