{"ScriptPreparationCode":"var arr = Array.from({length: 100000}, () =\u003E Math.floor(Math.random() * 40));;\r\nvar arr2 = Array.from({length: 100000}, () =\u003E Math.floor(Math.random() * 40));;\r\nwindow.arr = arr;\r\nwindow.arr2= arr2;","TestCases":[{"Name":"_.concat","Code":"_.concat(window.arr,window.arr2);","IsDeferred":false},{"Name":"concat","Code":"window.arr.concat(window.arr2)","IsDeferred":false},{"Name":"expand","Code":"window.arr.push(...window.arr2)","IsDeferred":false}]}