{"id":"mutable-list-for-string-manipulation","text":"Solutions that need character-level string mutation convert to `list()`, mutate in place, then `''.join()` back — the standard Python idiom since strings are immutable.","truth_value":"IN","source":"entries/2026/06/06/latest-time-by-replacing-hidden-digits-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"mutable-list-for-string-manipulation","truth_value":"IN","reason":"premise"}]}}