{"id":"build-array-permutation-precondition","text":"The modular encoding algorithm is only correct when `nums` is a valid zero-based permutation (all values in `[0, n)`, each appearing exactly once); invalid input produces silently wrong results.","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-permutation-precondition","truth_value":"IN","reason":"premise"}]}}