{"id":"duplicate-zeros-right-to-left-prevents-overwrite","text":"duplicate-zeros uses a two-pass right-to-left copy: first pass counts surviving zeros to find the write-head start, second pass copies backward so `j >= i` always holds and writes never destroy unread source data.","truth_value":"IN","source":"entries/2026/06/06/duplicate-zeros-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"duplicate-zeros-right-to-left-prevents-overwrite","truth_value":"IN","reason":"premise"}]}}