Regular Expressions 101

Pro

^start of line

Group 1((?:[^.]*\.){2})

Non-Capturing Group(?:[^.]*\.){2}

{2}repeats the group contents below exactly 2 times:

Negated Character Class[^.]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 2([^.])

Negated Character Class[^.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

^((?:[^.]*\.){2})([^.])

1.01.1
1.01.2
1.01.3
1.02.1

\g<1>0\g<2>

1.01.1
1.01.2
1.01.3
1.02.1