Input: "Let's take LeetCode contest" Output: "s'teL ekat edoCteeL tsetnoc"
解:输入一堆字符串,每一个空格之前的字符串都要反转,拆成一个数组反转之后拼成一个字符串
let array = s.split(' '); let newArr = []; for(let i = 0; i < array.length; i++){ let str = array[i].split("").reverse().join("") newArr.push(str) } let newStr = '' for(let j = 0; j<newArr.length; j++){ if(j == newArr.length-1){ newStr = newStr + newArr[j] }else{ newStr = newStr + newArr[j] + " " } } return newStr