20170223-LeetCode_434_Number of Segments in a String

1.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

2.Solution

#20170223
class Solution(object):
def countSegments(self, s):
"""
:type s: str
:rtype: int
"""
s,count=s.strip()+' ',0
for i in range(len(s)-1):
if s[i]!=' ' and s[i+1]==' ':
count+=1
return count

3.思路

!’ ‘+’ ‘这样的结构意味着有一个连续的字符出现