题解 | #计算某字符出现次数#

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 str1 = await readline()
   let str2 = await readline()
   let newStr1 = str1.split(' ').join('')
   let num = 0
   for(let desc of newStr1){
     if(desc.toLowerCase()===str2.toLowerCase()){
        num++
     }
   }
   console.log(num)
}()