Regular Expressions 101

Explanation

Pro

Group prefix1(?<prefix1>\d{0,3}?)

\d{0,3}?a digit, repeated between 0 and 3 times

Group threes1(?<threes1>\d{0,3})

\d{0,3}a digit, repeated between 0 and 3 times

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group prefix2(?<prefix2>\d{0,3}?)

\d{0,3}?a digit, repeated between 0 and 3 times

Positive Lookahead(?=\d)

\da digit

Group threes2(?<threes2>\d{0,3})

\d{0,3}a digit, repeated between 0 and 3 times

Global pattern flags

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

(?<prefix1>\d{0,3}?)(?<threes1>\d{0,3})\/(?<prefix2>\d{0,3}?)(?=\d)(?<threes2>\d{0,3})

New

12345/1234 ->    [12,345,1,234]
123456/789123 -> [123,456,789,123]


0/1 ->           [,,0,1]
123/132 ->       [,123,,132]
1234/3 ->        [1,234,,3]

Substitution

12345/1234 ->    [12,345,1,234]
123456/789123 -> [123,456,789,123]


0/1 ->           [,,0,1]
123/132 ->       [,123,,132]
1234/3 ->        [1,234,,3]