题解 | #计算某字符出现次数#
计算某字符出现次数
https://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1
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 let arrStr = [] while(line = await readline()){ arrStr.push(line) } let re1 = new RegExp(arrStr[1], 'ig') let result = arrStr[0].match(re1) || [] console.log(result.length) }()