{"id":"build-array-mutates-input","text":"`buildArray` mutates and returns the input `nums` list rather than allocating a separate output array — callers lose access to the original values after the call.","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-mutates-input","truth_value":"IN","reason":"premise"}]}}