题解 | #句子逆序#

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())) {
        let tokens = line.trim();
        if (tokens.length == 0) {
            console.log("请输入字符串");
            return 
        } else if (tokens.length > 1000) {
            console.log("输入的字符串超出范围");
            return 
        } else if (!/^[a-zA-Z ]+$/.test(tokens)) {
            console.log("请保证输入的字符串只包含空格和字母");
            return
        }
        let oldArr = tokens.split(" ");
        let newArr = [];
        for (let i = oldArr.length; i > 0; i--) {
            newArr.push(oldArr[i - 1]);
        }
        console.log(newArr.join(" "));
    }
})();