题解 | #图片整理#

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 arr = []
        for (let i = 0; i < line.length; i++){
            arr.push(line[i].charCodeAt())
        }
        arr.sort((a, b) => a - b)
        const str = arr.map(item => String.fromCharCode(item)).join('')
        console.log(str)
    }
}()