Generate a regex to find sub strings with certain number of occurrences of certain characters
30628
Overlapping matches in Regex
92414
RegEx to make sure that the string contains at least one lower case char, upper case char, digit and symbol
83008
RegEx with multiple groups?
34485
Finding common characters in two strings
142974
Get the index of a pattern in a string using regex
103018
Count occurrences of a sub string in a MySQL column
78395
Checking whole string with a regex
47106
How to match all occurrences of a regex
155425
Solve recurrence for strings that do not contain the substring 101
65270
How do I perform string matching and replacements?
81811
Simple way to count character occurrences in a string
118090
Generating all permutations of a given string
128484
How to filter string for unwanted characters using regex?
89793
Match a string against multiple patterns
126315
How to find overlapping matches with a regexp?
2223
Regular expression to match 7-12 digits; may contain space or hyphen
116057
Lisp format a character a number of times