题解 | #统计字符#

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 charCount =0;
       let spaceCount =0;
       let numCount =0;
       let otherCount =0;
       for(let i of line) {
        if(/[A-Za-z]/.test(i)){
         charCount++   
        } else if(/[0-9]/.test(i)){
            numCount++
        }else if(i === " ") {
            spaceCount++
        } else {
            otherCount++
        }

       }
        console.log(charCount + '\n'+ spaceCount + '\n' + numCount + '\n' + otherCount);
    }
}()