Regular Expressions 101

Group 1(\w)

\wany word character

\1?optionally matches the text saved by group 1

Group 2(\1*)

\1*the text saved by group 1, repeated any number of times

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.

27 tokens

Regular Expression

(\w)\1?(\1*)

New

abc
yahoo
opinion
aaaaaabc

abc
aabbcc
aaabbbccc
aaaaaa
aaaa

$1$1$2

abc
yahoo
opinion
aaaaaabc

abc
aabbcc
aaabbbccc
aaaaaa
aaaa