{"id":"build-array-in-place-modular-encoding","text":"`buildArray` encodes two values per slot as `original + n * new_value`, recoverable via `% n` (original) and `// n` (new value), achieving the O(1) extra space follow-up challenge.","truth_value":"IN","source":"entries/2026/06/06/build-array-from-permutation-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"build-array-in-place-modular-encoding","truth_value":"IN","reason":"premise"}]}}