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Other - Regular expression to find if a string contains all the characters of another string


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  #1  
Old July 3rd, 2012, 08:26 PM
rssadiq rssadiq is offline
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Other - Regular expression to find if a string contains all the characters of another string
Hi

I need a regular expression to find if a string contains all the characters of another string.

Can anyone help me with this please?
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Old July 3rd, 2012, 08:55 PM
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Worked Out The Answer !
Quote:
Originally Posted by rssadiq
Hi

I need a regular expression to find if a string contains all the characters of another string.

Can anyone help me with this please?


HERE IS THE ANSWER:

REPEAT .*[a,b,c]{1} as many times as the number of characters in the 2nd string and replace [a,b,c] in the square bracket with all characters in the 2nd string too.
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Old July 3rd, 2012, 09:02 PM
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Which is a horrible, horrible application of regular expressions, but hey! more power to you.
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Old July 3rd, 2012, 11:39 PM
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Quote:
Originally Posted by rssadiq
REPEAT .*[abc]{1} as many times as the number of characters in the 2nd string


Unfortunately, it will match "a" repeated three times with no "b" or "c" in the string.

Code:
.*[abc].*[abc].*[abc]

matches not only "abc" and "cba"

but also "aaa"


The correct solution is outlined on my page. But I agree with requinix that it's a terrible application of regular expressions. You should write some code instead; any programming language allows you to check the characters in a loop.
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