题解 | #字符串排序#

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())) {
        //抽取字母，排序
        let regex = /[a-zA-Z]/gi;
        let orderedChars = line
            .match(regex)
            .sort(
                (a, b) =>
                    a.toUpperCase().charCodeAt() - b.toUpperCase().charCodeAt()
            );

        //替换，拼接
        let result = [];
        let index = 0;
        for (let i = 0; i < line.length; i++) {
            if (/[a-zA-Z]/.test(line.charAt(i))) {
                result.push(orderedChars[index]);
                index++;
            } else {
                result.push(line.charAt(i));
            }
        }
        console.log(result.join(""));
    }
})();