434. Number of Segments in a String

Description

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

很简洁的写法，like it！

class Solution {
    public int countSegments(String s) {
        int segments = 0;
        for (int i = 0; i < s.length(); ++i) {
            if (s.charAt(i) != ' ' && (i == 0 || s.charAt(i - 1) == ' ')) {
                ++segments;
            }
        }
        
        return segments;
    }
}