Регулярный номер выражения от 1 до 100
^[1-9][0-9]?$|^100$
Reindert
^[1-9][0-9]?$|^100$echo 1a2b3c | sed 's/[^0-9]//g' #Replaces all not numbers
abcFor matching an integer number of one single char/digit, specify:
[0-9]
But for matching any number of more than one char/digit; add "+":
[0-9]+
Example for matching hour with minutes of HH:MM format in a file:
grep "[0-9]\+\:[0-9]\+" file.txtRegex regex = new Regex(@"^\d$");
/[A-Z]/ : 'must contain one uppercase'
/([a-z])/ : 'must contain one lowercase'
/(\d)/ : 'must contain one number'
/(\W)/ : 'must contain one special character'