翻译

原文

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.

代码

public String reverseWords(String s) {
        String[] strings = s.split(" ");
        StringBuilder stringBuilder = new StringBuilder();
        StringBuffer stringBuffer;
        for (int i = 0; i < strings.length; i++) {
            stringBuffer = new StringBuffer(strings[i]);
            stringBuilder.append(stringBuffer.reverse().toString() + " ");
        }
        return stringBuilder.toString().substring(0, stringBuilder.length() - 1);
    }