{"ScriptPreparationCode":null,"TestCases":[{"Name":"shift","Code":"const arr = [];\r\nfor (let i = 0; i \u003C 100000; i\u002B\u002B) {\r\n arr.push(i);\r\n}\r\n\r\nwhile (arr.length != 0) {\r\n const a = arr.shift();\r\n}","IsDeferred":false},{"Name":"index","Code":"const arr = [];\r\nfor (let i = 0; i \u003C 100000; i\u002B\u002B) {\r\n arr.push(i);\r\n}\r\n\r\nlet index = 0;\r\nwhile (arr.length \u003E index) {\r\n const a = arr[index\u002B\u002B];\r\n}","IsDeferred":false}]}