Title	Pattern Title
Expression	^(d{4}-){3}d{4}$|^(d{4} ){3}d{4}$|^d{16}$
Description	Used to validate Credit Card numbers, Checks if it contains 16 numbers in groups of 4 separated by -, ,or nothing
Matches	1111-2323-2312-3434 | 1234343425262837 | 1111 2323 2312 3434
Non-Matches	1111 2323 2312-3434 | 34323423 | 1111-2323-23122-3434

Title	Pattern Title
Expression	^[a-zA-Z0-9]+$
Description	it will check for alphanumeric (Alpha Numeric) values.
Matches	adad1213 | 1231dfadfa | dfad123dfasdfs
Non-Matches	dfa@#12313 | *(*sdfasdfadfd | $fffsdg121ddd#$f1q

Title	Pattern Title
Expression	^([1-9]|[1-9]d|100)$
Description	This pattern matches whole numbers 1-100.
Matches	1 | 50 | 100
Non-Matches	0 | .5 | 101

Title	Pattern Title
Expression	^[1-9]{1}$|^[1-4]{1}[0-9]{1}$|^50$
Description	Match any number between 1 and 50, no characters, no empty sets, and not zero. Match numbers greater than 1 and less than 51, no spaces, no characters.
Matches	1 | 23 | 50
Non-Matches	0 | 111 | xyz

Kaynak: http://regexlib.com/