Reverse Words in a String III

最新推荐文章于 2024-01-04 11:20:32 发布

原创最新推荐文章于 2024-01-04 11:20:32 发布 · 207 阅读

0 ·

CC 4.0 BY-SA版权

算法导论专栏收录该内容

13 篇文章

订阅专栏

本文介绍了一种使用C++中的stringstream实现翻转字符串中每个单词的方法。通过逐个读取并翻转单词，最终得到保留原有空格及单词顺序但每个单词内部字符顺序反转的字符串。

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.

这道题是要翻转字符串中的每个单词，使用字符流处理类stringstream来做的方法，相当简单，就是按顺序读入每个单词进行翻转即可。

代码如下：

class Solution {
public:
    string reverseWords(string s) {
        string res = "", t = "";
        istringstream is(s);
        while (is >> t) {
            reverse(t.begin(), t.end());
            res += t + " ";
        }
        res.pop_back();
        return res;
    }
};