add extend

original/extand/convert.js

@@ -5,10 +5,11 @@ const utils = require('../../utils');
 const input = fs.readFileSync(path.join(__dirname, './data.txt'), 'utf8')
 
 let list = input.trim().replace(/[\r\n a-zA-Z0-9-_~!@#$%^&*\(\)<>?:\"\{\},\.\/;'\[\]\|\\=+·！？【】（）《》；：，。、…「」〔〕‘’“”»\t　©％→]/g, "")
-console.log(list)
-console.log()
+
 list = Array.from(new Set(list.split(''))).sort((a, b) => a.localeCompare(b)).join('')
-console.log(list)
+// console.log(list)
+fs.writeFileSync(path.join(__dirname, './output.txt'), list, 'utf8')
+return
 
 for (let word of list) {
     // 汉字