/*
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"
public class Solution {
public String reverseWords(String s) {
String words[] = s.split(" ");
StringBuilder res=new StringBuilder();
for (String word: words)
res.append(new StringBuffer(word).reverse().toString() + " ");
return res.toString().trim();
}
*/