regex101: Grouped Complex

^start of line

Group 1([ ]*(?:[-]|[+])?[ ]*\d+(?:,\d+|))

Character Class[ ]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:[-]|[+])?

?repeats the group contents below at most once:

1st Alternative[-]

Character Class[-]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative[+]

Character Class[+]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

Character Class[ ]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\d+a digit, repeated at least once

Non-Capturing Group(?:,\d+|)

1st Alternative,\d+

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d+a digit, repeated at least once

2nd Alternative — matches an empty string

Group 2([ ]*(?:[+]|[-])[ ]*(?:\d+(?:,\d+|)[ ]*[*]?[ ]*|)i[ ]*|[ ]*)

1st Alternative[ ]*(?:[+]|[-])[ ]*(?:\d+(?:,\d+|)[ ]*[*]?[ ]*|)i[ ]*

Character Class[ ]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:[+]|[-])

1st Alternative[+]

Character Class[+]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

2nd Alternative[-]

Character Class[-]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[ ]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:\d+(?:,\d+|)[ ]*[*]?[ ]*|)

1st Alternative\d+(?:,\d+|)[ ]*[*]?[ ]*

\d+a digit, repeated at least once

Non-Capturing Group(?:,\d+|)

1st Alternative,\d+

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d+a digit, repeated at least once

2nd Alternative — matches an empty string

Character Class[ ]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[*]?

?matches at most one character from the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

Character Class[ ]*

2nd Alternative — matches an empty string

ithe literal i (105₁₀ / 151₈ / 69₁₆) (case sensitive)

Character Class[ ]*

2nd Alternative[ ]*

$end of line

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

25 tokens

Regular Expression

^([ ]*(?:[-]|[+])?[ ]*\d+(?:,\d+|))([ ]*(?:[+]|[-])[ ]*(?:\d+(?:,\d+|)[ ]*[*]?[ ]*|)i[ ]*|[ ]*)$

New

1421
-124
-1245,
1234,
1235,002400
12435,000
-132435,0
+134235,014000
-1324,42  +i
345,4+   i*452,0250
+345-i452,00

Regular Expressions 101

Regular Expression

Extraction