434 Number of Segments in a String

434 Number of Segments in a String

题目描述：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.

题目大意：给定一个string数组，找出空格分割字符的个数。

思路，当前非空，前一个字符为空即可

代码

package String;

/**
* @Author OovEver
* @Date 2017/12/6 11:33
*/
public class LeetCode434 {
public static int countSegments(String s) {
int res = 0;
for(int i=0;i<s.length();i++) {
//            前一个字符为空，当前字符不为空
if (s.charAt(i) != ' ' && (i == 0 || s.charAt(i - 1) == ' ')) {
res++;
}
}
return res;
}

public static void main(String[] args) {
System.out.println(countSegments(("              ")));
}
}