{"id":"merge-nums-no-input-mutation","text":"`merge_nums` never modifies `nums1` or `nums2`; matched entries produce new `[id, sum]` lists, while unmatched entries are appended by reference.","truth_value":"IN","source":"entries/2026/06/06/merge-two-2d-arrays-by-summing-values-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"merge-nums-no-input-mutation","truth_value":"IN","reason":"premise"}]}}