移除重复字符很简单,这里是最笨,也是最简单的一种.问题关键是理解排序的意义: # coding=utf-8 #learning at jeapedu in 2013/10/26 #移除给定字符串中重复字符,参数s是字符串 def removeDuplicate(s): s = list(s) s.sort() #对给定字符串排序,不排序可能移除不完整 for i in s: while s.count(i) > 1: s.remove(i) s = "".join(s) #把列表
#统计字符串中每个字符出现的次数 以The quick brown fox jumps over the lazy dog为例 message='The quick brown fox jumps over the lazy dog' count={} for character in message: count.setdefault(character,0) count[character]=count[character]+1 print(count) 参考:<Python编程快速上手--