p434

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LeetCode p434 Number of Segments in a String 题解

1.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

题意：

给一个字符串，输出他的组成单元个数。

2.解题思路:

见代码。

3.代码

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

4.一些总结：