How to match any combination of letters using regex?
html, java, javascript, perl, regex
Solution
Use regex pattern
\b(?!\w*(\w)\w*\1)[abc]+\b
You can use this pattern with any set and size, just replace `[abc]` with desired set...
Example:
(above output is from myregextester)
Problem
How can I match letters a,b,c once in any combination and varying length like this: The expression should match these cases: ``` abc bc a b bca ``` but should not match these ones: ``` abz aab cc x ```