Given a string s, return the number of segments in the string.

A segment is defined to be a contiguous sequence of non-space characters.

  Example 1:

Input: s = "Hello, my name is John" Output: 5 Explanation: The five segments are ["Hello,", "my", "name", "is", "John"]

Example 2:

Input: s = "Hello" Output: 1

  Constraints:

0 <= s.length <= 300
s consists of lowercase and uppercase English letters, digits, or one of the following characters "!@#$%^&*()_+-=',.:".
The only space character in s is ' '.