Prepare > Regex > Character Class > Excluding Specific Characters

Excluding Specific Characters | HackerRank

 

문제

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Task

You have a test string S.
Your task is to write a regex that will match  with the following conditions:

• S must be of length 6.
• First character should not be a digit (1,2,3,4,5,6,7,8,9 or 0).
• Second character should not be a lowercase vowel (a,i,e,u or o).
• Third character should not be b, c, D or F.
• Fourth character should not be a whitespace character ( \r, \n, \t, \f or <space> ).
• Fifth character should not be a uppercase vowel (A,E,U,I or U).
• Sixth character should not be a . or , symbol.

 

 

 

 

코드

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Regex_Pattern = r'^[^0-9][^auioe][^bcDF][^\s][^AEIOU][^\.,]$'	# Do not delete 'r'.

import re

print(str(bool(re.search(Regex_Pattern, input()))).lower())

 

 

 

 

노트

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^ 부정 문자 클래스

The negated character class [^] matches any character that is not in the square brackets.

 

 

 

Regex_Pattern = r'^\D[^auioe][^bcDF]\S[^AEIOU][^\.,]$'	# Do not delete 'r'.

import re

print(str(bool(re.search(Regex_Pattern, input()))).lower())

• [^0-9] 를 \D로
• [^\s]를 \S로
• S는 무조건 6글자 이므로 ^와 $로 길이까지 지정