如何查找字符串是否包含所有特定字符？

Question

For example:

Characters to match: 'czk'
string1: 'zack' Matches
string2: 'zak'  Does not match

I tried (c)+(k)+(z) and [ckz] which are obviously wrong. I feel this is a simple task, but i am unable to find an answer

Answer 1

The most natural way would probably to use sets rather than regex, like so

set('czk').issubset(s)

Code is very often simpler and easier to maintain without using regex much.

Answer 2

基本上你必须首先对字符串进行排序，这样你才能得到“ackz”，然后你可以使用像/.*c.*k.*z.*/这样的正则表达式进行匹配。