{"html":"<!DOCTYPE html>\n<html>\n\n<head>\n    <meta charset=\"UTF-8\">\n    <style>\n       /* 填写样式 */\n    </style>\n</head>\n\n<body>\n    <!-- 填写标签 -->\n    <script type=\"text/javascript\">\n        // 填写JavaScript\n        const _permute = string => {\n            if(string.length === 1) return [string]\n            const resArr = [];\n            \n            for(const value of string) {\n                const arr = string.split('').filter(str => str !== value)\n                _permute(arr.join('')).forEach(item => {\n                    resArr.push(value + item)\n                })\n            }\n\n            return resArr;\n        }\n\n    </script>\n</body>\n\n</html>","css":"","js":""}