434. Number of Segments in a String

题目：

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

链接：https://leetcode.com/problems/number-of-segments-in-a-string/#/description

3/25/2017

public class Solution {
    public int countSegments(String s) {
        boolean inSegment = false;
        int count = 0;
        for (int i = 0; i < s.length(); i++) {
            if (s.charAt(i) == ' ') {
                if (inSegment) inSegment = false;
            } else {
                if (!inSegment) {
                    inSegment = true;
                    count++;
                }
            }
        }
        return count;
    }
}

别人的精简版

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;
}