题解 | #计算某字符出现次数#

// 使用字符串match方法
const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

void (async function () {
    const arr = [];
    // Write your code here
    while ((line = await readline())) {
        arr.push(line);
    }
    const getRepeatCount = (str, s) => {
        return str.match(new RegExp(s, 'gi'))?.length || 0
    }
    console.log(getRepeatCount(...arr));
})();