题解 | #字符逆序#

let str = readline();
function getStr(str){
    let res;
    let returnStr;
    let resArr = [];
    if(/[^a-zA-Z\s]/g.test(str)){
        throw new Error('输入值错误');
    }

    let reg = /(\s+)?([a-zA-Z]+)/gi;
    returnStr = str.match(reg);
    for(let i = returnStr.length - 1; i>=0; i--){
        resArr.push(returnStr[i].split('').reverse().join(''))
    }
    console.log(resArr.join(''));
}
getStr(str);