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
Solution：
思路：
Time Complexity: O(N) Space Complexity: O(1)
Solution Code：
class Solution {
public int countSegments(String s) {
int res=0;
for(int i=0; i<s.length(); i++)
if(s.charAt(i)!=' ' && (i==0 || s.charAt(i-1)==' '))
res++;
return res;
}
}
