LeetCode152|字符串中的单词数

示例:

输入: "Hello, my name is John"
输出: 5
解释: 这里的单词是指连续的不是空格的字符，所以 "Hello," 算作 1 个单词。

 

public class CountSegmentsTest2 {
    public static void main(String[] args) {
        String str = "Hello, my name is John";
        int countSegments = countSegments(str);
        System.out.println("countSegments = " + countSegments);
    }

    public static int countSegments(String s) {
        if (s == null || s.length() == 0) {
            return 0;
        }
        String[] split = s.split(" ");
        int count = 0;
        for (String str : split) {
            if (!"".equals(str)) {
                count++;
            }
        }
        return count;
    }
}