Regular Expressions 101

Pro

Group 1(abc|bcd|cde|def|efg|fgh|ghi|hij|ijk|jkl|klm|lmn|mno|nop|opq|pqr|qrs|rst|stu|tuv|uvw|vwx|wxy|xyz)

1st Alternativeabc

abcthe literal text abc (case sensitive)

2nd Alternativebcd

bcdthe literal text bcd (case sensitive)

3rd Alternativecde

cdethe literal text cde (case sensitive)

4th Alternativedef

defthe literal text def (case sensitive)

5th Alternativeefg

efgthe literal text efg (case sensitive)

6th Alternativefgh

fghthe literal text fgh (case sensitive)

7th Alternativeghi

ghithe literal text ghi (case sensitive)

8th Alternativehij

hijthe literal text hij (case sensitive)

9th Alternativeijk

ijkthe literal text ijk (case sensitive)

10th Alternativejkl

jklthe literal text jkl (case sensitive)

11th Alternativeklm

klmthe literal text klm (case sensitive)

12th Alternativelmn

lmnthe literal text lmn (case sensitive)

13th Alternativemno

mnothe literal text mno (case sensitive)

14th Alternativenop

nopthe literal text nop (case sensitive)

15th Alternativeopq

opqthe literal text opq (case sensitive)

16th Alternativepqr

pqrthe literal text pqr (case sensitive)

17th Alternativeqrs

qrsthe literal text qrs (case sensitive)

18th Alternativerst

rstthe literal text rst (case sensitive)

19th Alternativestu

stuthe literal text stu (case sensitive)

20th Alternativetuv

tuvthe literal text tuv (case sensitive)

21st Alternativeuvw

uvwthe literal text uvw (case sensitive)

22nd Alternativevwx

vwxthe literal text vwx (case sensitive)

23rd Alternativewxy

wxythe literal text wxy (case sensitive)

24th Alternativexyz

xyzthe literal text xyz (case sensitive)

Group 2(19\d{2}|20[01]\d)

Group 3(10{1,3}|[25]0{1,2})

\da digit

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

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25 tokens

Regular Expression

(abc|bcd|cde|def|efg|fgh|ghi|hij|ijk|jkl|klm|lmn|mno|nop|opq|pqr|qrs|rst|stu|tuv|uvw|vwx|wxy|xyz)(19\d{2}|20[01]\d)(10{1,3}|[25]0{1,2})\d

Unit Tests

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