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)
}()
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