{"ScriptPreparationCode":null,"TestCases":[{"Name":"join","Code":"const arr = []\r\n\r\nfor (let i=0; i\u003C100000; i\u002B\u002B) {\r\narr.push(\u0027a\u0027 \u002B i)\r\n}\r\n\r\nconsole.log(arr.join(\u0027\u0027))","IsDeferred":false},{"Name":"concatenate","Code":"let b = \u0027\u0027\r\n\r\nfor (let i=0; i\u003C100000; i\u002B\u002B) {\r\nb \u002B= \u0027a\u0027 \u002B i\r\n}\r\n\r\nconsole.log(b)","IsDeferred":false}]}