题目要是这么简单sort内置方法,估计出题人他希望用更加基础的方式来了解你的排序基础,所以大家还是自己实现排序

简单粗暴不加班法

const readline = require("readline");

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
});
rl.on("line", function (line) {
  console.log(line.split('').sort().join(''))
});

冒泡法

const readline = require("readline");

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
});
rl.on("line", function (line) {
  const lines = line.split("");
  for (let i = 0; i < lines.length; i++) {
    for (let j = 1; j < lines.length-i; j++) {
      if (lines[j].charCodeAt() <lines[j-1].charCodeAt()) {
        const temp = lines[j-1];
        lines[j-1] = lines[j];
        lines[j] = temp;
      }
    }
  }
  console.log(lines.join(''));
});