【LeetCode】557. Reverse Words in a String III

Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.

Example 1:

Input: "Let's take LeetCode contest"
Output: "s'teL ekat edoCteeL tsetnoc"

Note: In the string, each word is separated by single space and there will not be any extra space in the string.

也是很简单的一个题目，要求按单词进行reverse。

这里主要用到string.split("").reverse().join("")；来对字符串进行反转

/**
 * @param {string} s
 * @return {string}
 */
var reverseWords = function(s) {
    var arr=s.split(" ");
    var ret='';
    for(var i=arr.length-1;i>=0;i--){
        ret=arr[i].split("").reverse().join("")+" "+ret;
    }
    return ret.substr(0,ret.length-1);
};

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