{"ScriptPreparationCode":"var alan = []\r\n\r\nfor (let i = 0; i \u003C 30; i\u002B\u002B) {\r\n alan.push(Array.from({\r\n length: 30\r\n }, (_, index) =\u003E index \u002B 1))\r\n }","TestCases":[{"Name":"Spread","Code":"let beta = []\r\nbeta.push(...alan.slice(0, 2))\r\nbeta.push(alan[2].map((_, index) =\u003E index === 1 ? 9 : _))\r\nbeta.push(...alan.slice(3))","IsDeferred":false},{"Name":"JSON Parse \u0026 Stringify","Code":"let beta = JSON.parse(JSON.stringify(alan))\r\nbeta[2][1] = 9","IsDeferred":false}]}