Count the number of segments in a string, where a segment is defined to be a contiguous sequence of non-space characters.
    Please note that the string does not contain any non-printable characters.
    Example: Input: “Hello, my name is John” Output: 5
    Runtime: 4 ms, faster than 9.28% of C++ online submissions for Number of Segments in a String.
    Memory Usage: 4.7 MB, less than 0.65% of C++ online submissions forNumber of Segments in a String.

    1. class Solution {
    2. public:
    3.     int countSegments(string s) {
    4.         int length = s.length();
    5.         int i = 0;
    6.         int result = 0;
    7.         while(i < length) {
    8.             if(!isspace(s[i++])) {
    9.                 ++result;
    10.                 while(!isspace(s[i++])){
    11.                     if (i == length) {
    12.                         break;
    13.                     }
    14.                 };
    15.             }
    16.         }
    17.         return result;
    18.     }
    19. };