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

Example 1:

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

Example 2:

    Input: s = "God Ding"
    Output: "doG gniD"

Constraints:

- `1 <= s.length <= 5 * 104`
- `s` contains printable ASCII characters.
- `s` does not contain any leading or trailing spaces.
- There is at least one word in `s`.
- All the words in `s` are separated by a single space.