题解 | #统计字符#
统计字符
https://www.nowcoder.com/practice/539054b4c33b4776bc350155f7abd8f5
const rl = require("readline").createInterface({ input: process.stdin }); var iter = rl[Symbol.asyncIterator](); const readline = async () => (await iter.next()).value; void (async function () { // Write your code here while ((line = await readline())) { let tokens = line; let result = new Array(4).fill(0); result[0] = tokens.match(/[a-zA-Z]/g) ? tokens.match(/[a-zA-Z]/g).length : 0; result[1] = tokens.match(/[ ]/g) ? tokens.match(/[ ]/g).length : 0; result[2] = tokens.match(/[0-9]/g) ? tokens.match(/[0-9]/g).length : 0; result[3] = tokens.match(/[^0-9a-zA-Z ]/g) ? tokens.match(/[^0-9a-zA-Z ]/g).length : 0; result.forEach((item) => { console.log(item); }); } })();