Regular Expressions 101

Pro

^start of line

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-z]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Group 1([ ][A-Z][a-z]*)*

*repeats the group contents below any number of times:

Character Class[ ]

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-z]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

$end of line

the literal ↵ (10₁₀ / 12₈ / A₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^[A-Z][a-z]+([ ][A-Z][a-z]*)*$

New

Le Thanh Toan
Nuyen Thanh Toan
Le Nguyen Thanh Toan
Le Tran Nguyen Bui Huynh Thanh Toan
Le Toan
Le T
Toan

nguyen
nguyen nam
nguyen long 
nguyen Thanh
Nguyen thanh
Le Toan 
NguyeN NaM LonG

Extraction

Le Thanh Toan
Nuyen Thanh Toan
Le Nguyen Thanh Toan
Le Tran Nguyen Bui Huynh Thanh Toan
Le Toan
Le T
Toan

nguyen
nguyen nam
nguyen long 
nguyen Thanh
Nguyen thanh
Le Toan 
NguyeN NaM LonG