题解 | #单词倒排#

let str = readline();
function getStr(str){
    let res;
    let returnStr;
    let resArr = [];

    let reg = /([a-zA-Z]+)/g;
    returnStr = str.match(reg);
    for(let i = returnStr.length - 1; i>=0; i--){
        if(returnStr[i].trim().length>20){
            throw new Error('输入值错误');
        }
        resArr.push(returnStr[i].trim())
    }
    console.log(resArr.join(' '));
}
getStr(str);