题解 | #截取字符串#

const readline = require("readline");

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});
const input = [];
rl.on("line", function (line) {
   input.push(line)
});
// 这题只是给用ts的可怜娃示范最佳获取输入和输出方法的
rl.on("close", function () {
    const str = input[0];
    const end = input[1];
    console.log(str.slice(0,end))
});