LeetCode 434. Number of Segments

审题不仔细，提交错了好几次。

成功提交代码

class Solution(object):
    def countSegments(self, s):
        return len([x for x in s.split(' ') if x])

最终优化代码

class Solution(object):
    def countSegments(self, s):
        return len(s.split())

心得体会

s.split()和s.split(' ')的区别

s = ", , , ,        a, eaefa"

print s.split()
[',', ',', ',', ',', 'a,', 'eaefa']

print s.split(' ')
[',', ',', ',', ',', '', '', '', '', '', '', '', 'a,', 'eaefa']

print [x for x in s.split(' ') if x]
[',', ',', ',', ',', 'a,', 'eaefa']