{"id":"merge-alternately-word1-first","text":"At each index position, `mergeAlternately` appends `word1`'s character before `word2`'s, guaranteeing `word1` leads at every shared index.","truth_value":"IN","source":"entries/2026/06/06/merge-strings-alternately-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"merge-alternately-word1-first","truth_value":"IN","reason":"premise"}]}}