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cmskkrrq20000w6p2a8abouey
Submission ABOUEY
{ "timeout_ms": 50, "generated_regex": "^(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)$", "test_strings_match": [ "1.0.0", "0.11.204", "10.2.0" ], "test_strings_no_match": [ "01.0.0", "1.0", "1.0.0.1", "1.0.x", "v1.0.0", "1.00000000000000000000000000000000000000000000...
cmskkrrq30001w6p290z89jsj
Submission Z89JSJ
{ "timeout_ms": 50, "generated_regex": "^([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]$", "test_strings_match": [ "00:00:00", "23:59:59", "09:30:07" ], "test_strings_no_match": [ "24:00:00", "12:60:00", "9:30:07", "23:59", "12:30:60", "1111111111111111111111111111111111111111111...
cmskkrrq30002w6p21tg9kfvz
Submission G9KFVZ
{ "timeout_ms": 50, "generated_regex": "^((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\\.){3}(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])$", "test_strings_match": [ "0.0.0.0", "192.168.1.1", "255.255.255.255", "8.8.8.8" ], "test_strings_no_match": [ "256.1.1.1", "192.168.1", "192...
cmskkrrq30003w6p2msg23454
Submission G23454
{ "timeout_ms": 50, "generated_regex": "^#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$", "test_strings_match": [ "#fff", "#FFFFFF", "#a1B2c3", "#000" ], "test_strings_no_match": [ "fff", "#ffff", "#12345", "#gggggg", "#", "#aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmskkrrq30004w6p2dwq98el5
Submission Q98EL5
{ "timeout_ms": 50, "generated_regex": "^[0-9a-fA-F]{2}(:[0-9a-fA-F]{2}){5}$", "test_strings_match": [ "00:1A:2B:3C:4D:5E", "ff:ff:ff:ff:ff:ff", "de:ad:be:ef:00:01" ], "test_strings_no_match": [ "00:1A:2B:3C:4D", "00-1A-2B-3C-4D-5E", "00:1A:2B:3C:4D:5E:6F", "0:1A:2B:3C:4D:5E", ...
cmskkrrq30005w6p2wu8e2ame
Submission 8E2AME
{ "timeout_ms": 50, "generated_regex": "^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$", "test_strings_match": [ "f47ac10b-58cc-4372-a567-0e02b2c3d479", "16fd2706-8baf-433b-82eb-8c7fada847da" ], "test_strings_no_match": [ "f47ac10b-58cc-3372-a567-0e02b2c3d479", "f47ac10b...
cmskkrrq30006w6p2q17oo3bw
Submission 7OO3BW
{ "timeout_ms": 50, "generated_regex": "^\\+[1-9][0-9]{1,14}$", "test_strings_match": [ "+919876543210", "+14155552671", "+4420" ], "test_strings_no_match": [ "919876543210", "+0123456789", "+1", "+1234567890123456", "+12 3456", "+1111111111111111111111111111111111111111111...
cmskkrrq30007w6p2lu8z5eiv
Submission 8Z5EIV
{ "timeout_ms": 50, "generated_regex": "^(0|[1-9][0-9]{0,3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])$", "test_strings_match": [ "0", "80", "8080", "65535", "65000" ], "test_strings_no_match": [ "65536", "099", "-1", "70000", "8080a", "",...
cmskkrrq30008w6p2tornp2t7
Submission RNP2T7
{ "timeout_ms": 50, "generated_regex": "^\"([^\"\\\\]|\\\\.)*\"$", "test_strings_match": [ "\"\"", "\"hello\"", "\"say \\\"hi\\\"\"", "\"c:\\\\path\"" ], "test_strings_no_match": [ "\"unterminated", "no quotes", "\"bad\\\"", "\"a\" \"b\"", "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmskkrrq30009w6p2gy0gh1ie
Submission 0GH1IE
{ "timeout_ms": 50, "generated_regex": "^[1-9][0-9]{0,2}(,[0-9]{3})*(\\.[0-9]{2})?$", "test_strings_match": [ "7", "1,234", "12,345,678.90", "999.00" ], "test_strings_no_match": [ "0,100", "1234", "1,23", "1,234.5", ",100", "1,0000000000000000000000000000000000000000000...
cmsmsm3fd002gdmp2j1efkmls
Submission EFKMLS
{ "timeout_ms": 50, "generated_regex": "^\\d{5}(-\\d{4})?$", "test_strings_match": [ "90210", "12345-6789", "00001" ], "test_strings_no_match": [ "1234", "123456", "90210-12", "abcde", "90210-678a" ], "natural_language_description": "Match a US ZIP code: five digits, option...
cmsmsm3fd002hdmp2o46qwyvk
Submission 6QWYVK
{ "timeout_ms": 50, "generated_regex": "^#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$", "test_strings_match": [ "#fff", "#FFFFFF", "#a1b2c3" ], "test_strings_no_match": [ "fff", "#ff", "#gggggg", "#12345", "#1234567" ], "natural_language_description": "Match a CSS hex color: a hash fo...
cmsmsm3fd002idmp24a32s2xk
Submission 32S2XK
{ "timeout_ms": 50, "generated_regex": "^((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)\\.){3}(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)$", "test_strings_match": [ "0.0.0.0", "192.168.1.1", "255.255.255.255" ], "test_strings_no_match": [ "256.0.0.1", "1.2.3", "192.168.1.1.1", "01.02.03.04", ...
cmsmsm3fd002jdmp2rydn9upu
Submission DN9UPU
{ "timeout_ms": 50, "generated_regex": "^([01]\\d|2[0-3]):[0-5]\\d$", "test_strings_match": [ "00:00", "23:59", "09:30" ], "test_strings_no_match": [ "24:00", "12:60", "9:30", "23:5", "1200" ], "natural_language_description": "Match a 24-hour clock time in HH:MM form, hours...
cmsmsm3fd002kdmp2wjmduhgi
Submission MDUHGI
{ "timeout_ms": 50, "generated_regex": "^\\+[1-9]\\d{1,14}$", "test_strings_match": [ "+14155552671", "+919876543210", "+491701234567" ], "test_strings_no_match": [ "14155552671", "+0123456", "+", "+1234567890123456", "+12a45" ], "natural_language_description": "Match an E....
cmsmsm3fd002ldmp2crirc4ho
Submission IRC4HO
{ "timeout_ms": 50, "generated_regex": "^\\d+\\.\\d+\\.\\d+$", "test_strings_match": [ "1.0.0", "10.20.30", "0.0.1" ], "test_strings_no_match": [ "1.0", "1.0.0.0", "v1.0.0", "1.0.x", "1..0" ], "natural_language_description": "Match a semantic version number of the form MAJO...
cmsmsm3fd002mdmp25krmb8nf
Submission RMB8NF
{ "timeout_ms": 50, "generated_regex": "^[A-Za-z]\\w{2,15}$", "test_strings_match": [ "abc", "user_123", "John_Doe99" ], "test_strings_no_match": [ "ab", "1user", "user name", "_user", "thisusernameiswaytoolong" ], "natural_language_description": "Match a username of 3 to 1...
cmsmsm3fd002ndmp2dwtbzuu2
Submission TBZUU2
{ "timeout_ms": 50, "generated_regex": "^([0-9A-Fa-f]{2}:){5}[0-9A-Fa-f]{2}$", "test_strings_match": [ "00:1A:2B:3C:4D:5E", "ff:ff:ff:ff:ff:ff", "01:23:45:67:89:ab" ], "test_strings_no_match": [ "00:1A:2B:3C:4D", "00-1A-2B-3C-4D-5E", "GG:1A:2B:3C:4D:5E", "001A2B3C4D5E", "00:1A:...
cmsmsm3fd002odmp2ha5998a9
Submission 5998A9
{ "timeout_ms": 50, "generated_regex": "^[+-]?\\d+(\\.\\d+)?$", "test_strings_match": [ "42", "-3.14", "+0.5" ], "test_strings_no_match": [ ".5", "5.", "1.2.3", "abc", "--5" ], "natural_language_description": "Match a signed or unsigned decimal number with an optional fract...
cmsmsm3fe002pdmp2hdssc0r8
Submission SSC0R8
{ "timeout_ms": 50, "generated_regex": "^(100|\\d{1,2}(\\.\\d)?)%$", "test_strings_match": [ "0%", "99.9%", "100%" ], "test_strings_no_match": [ "101%", "100.5%", "50", "-5%", "1.55%" ], "natural_language_description": "Match a percentage from 0 to 100 with an optional sing...
cmsmsm3fe002qdmp2i3y6aupc
Submission Y6AUPC
{ "timeout_ms": 50, "generated_regex": "^#\\w+$", "test_strings_match": [ "#data", "#Bounty2026", "#a" ], "test_strings_no_match": [ "data", "#", "#has space", "# leading", "##double" ], "natural_language_description": "Match a hashtag: a hash sign followed by one or more w...
cmsmsm3fe002rdmp2bu0dtnpc
Submission 0DTNPC
{ "timeout_ms": 50, "generated_regex": "^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$", "test_strings_match": [ "550e8400-e29b-41d4-a716-446655440000", "f47ac10b-58cc-4372-a567-0e02b2c3d479" ], "test_strings_no_match": [ "550e8400-e29b-31d4-a716-44665544000...
cmsmsm3fe002sdmp23nqvvyfv
Submission QVVYFV
{ "timeout_ms": 50, "generated_regex": "^(0|[1-9]\\d*)$", "test_strings_match": [ "0", "7", "1000000" ], "test_strings_no_match": [ "007", "-3", "3.0", "", "0123" ], "natural_language_description": "Match a positive integer with no leading zeros (zero itself is allowed)." }
cmsmsm3fe002tdmp2qmgdfl2p
Submission GDFL2P
{ "timeout_ms": 50, "generated_regex": "^[a-z0-9]+(_[a-z0-9]+)*$", "test_strings_match": [ "user_id", "total_count_2", "abc" ], "test_strings_no_match": [ "_user", "user_", "User_Id", "user__id", "user-id" ], "natural_language_description": "Match a snake_case identifier: l...
cmsmsm3fe002udmp2stooyq6g
Submission OOYQ6G
{ "timeout_ms": 50, "generated_regex": "^[a-z]+([A-Z][a-z0-9]+)*$", "test_strings_match": [ "camelCase", "userId", "totalItemCount" ], "test_strings_no_match": [ "CamelCase", "camel_case", "1camel", "camel Case", "camelCASE" ], "natural_language_description": "Match a camel...
cmsmsm3fe002vdmp21yzd962h
Submission ZD962H
{ "timeout_ms": 50, "generated_regex": "^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$", "test_strings_match": [ "TWFu", "TWE=", "c3VyZS4=" ], "test_strings_no_match": [ "TW=E", "====", "TWFu=", "!!!!", "TWF" ], "natural_language_description": "Match a sta...
cmsmsm3fe002wdmp22v86t2c7
Submission 86T2C7
{ "timeout_ms": 50, "generated_regex": "^[A-Za-z]:\\\\(?:[^\\\\/:*?\"<>|\\r\\n]+\\\\?)*$", "test_strings_match": [ "C:\\Users\\Public", "D:\\", "E:\\a\\b\\c" ], "test_strings_no_match": [ "C:/Users", "Users\\Public", "1:\\x", "C:\\a<b", "\\\\server\\share" ], "natural_langu...
cmsmsm3fe002xdmp28xbxz791
Submission BXZ791
{ "timeout_ms": 50, "generated_regex": "^97[89]-\\d{9}-\\d$", "test_strings_match": [ "978-030640615-7", "979-123456789-0" ], "test_strings_no_match": [ "977-030640615-7", "978-30640615-7", "9780306406157", "978-030640615-", "978-030640615-77" ], "natural_language_description":...
cmsmsm3fe002ydmp28wsgwt6k
Submission SGWT6K
{ "timeout_ms": 50, "generated_regex": "^-?\\d+(\\.\\d+)?°C$", "test_strings_match": [ "25°C", "-3.5°C", "0°C" ], "test_strings_no_match": [ "25C", "25°F", "°C", "25 °C", "--5°C" ], "natural_language_description": "Match a temperature in Celsius: an optional minus sign, dig...
cmsmsm3fe002zdmp2rgdadkv8
Submission DADKV8
{ "timeout_ms": 50, "generated_regex": "^(1[0-2]|[1-9]):[0-5]\\d (AM|PM)$", "test_strings_match": [ "9:30 AM", "12:00 PM", "1:05 AM" ], "test_strings_no_match": [ "13:00 PM", "0:30 AM", "9:60 PM", "9:30AM", "9:30 am" ], "natural_language_description": "Match a 12-hour clock...
cmsmsm3fe0030dmp2plywa26w
Submission YWA26W
{ "timeout_ms": 50, "generated_regex": "^\\$\\d{1,3}(,\\d{3})*\\.\\d{2}$", "test_strings_match": [ "$5.00", "$1,234.56", "$1,000,000.00" ], "test_strings_no_match": [ "$1234.56", "$5.0", "5.00", "$1,23.45", "$1,234.567" ], "natural_language_description": "Match a currency a...
cmsmsm3fe0031dmp2j4801it6
Submission 801IT6
{ "timeout_ms": 50, "generated_regex": "^<[a-z][a-z0-9]*>$", "test_strings_match": [ "<div>", "<h1>", "<p>" ], "test_strings_no_match": [ "<Div>", "<div class>", "</div>", "<div", "<1tag>" ], "natural_language_description": "Match a simple lowercase HTML opening tag with no...
cmsmsm3fe0032dmp2lau0rwk0
Submission U0RWK0
{ "timeout_ms": 50, "generated_regex": "^[a-z]+(,[a-z]+)*$", "test_strings_match": [ "apple", "apple,banana", "a,b,c" ], "test_strings_no_match": [ ",apple", "apple,", "apple, banana", "apple,,banana", "Apple,Banana" ], "natural_language_description": "Match a comma-separat...
cmsmsm3fe0033dmp2waiu8kvo
Submission IU8KVO
{ "timeout_ms": 50, "generated_regex": "^[0-9a-f]{7,40}$", "test_strings_match": [ "a1b2c3d", "0123456789abcdef", "deadbeef" ], "test_strings_no_match": [ "a1b2c3", "A1B2C3D", "g123456", "a1b2c3d ", "0123456789abcdef0123456789abcdef012345678" ], "natural_language_descriptio...
cmsmsm3fe0034dmp26je42byj
Submission E42BYJ
{ "timeout_ms": 50, "generated_regex": "^[A-Z_][A-Z0-9_]*=.*$", "test_strings_match": [ "PATH=/usr/bin", "MY_VAR=123", "DEBUG=" ], "test_strings_no_match": [ "path=/usr/bin", "1VAR=x", "MY VAR=1", "=value", "my_var=1" ], "natural_language_description": "Match an environment...
cmsr8rkj1004632p2welekatm
Submission LEKATM
{ "timeout_ms": 200, "generated_regex": "^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$", "test_strings_match": "550e8400-e29b-41d4-a716-446655440000", "test_strings_no_match": "550e8400-e29b-31d4-a716-446655440000\n550e8400e29b41d4a716446655440000\naaaaaaaaaaaaaaaaaaaaaa...
cmsr8rkj2004q32p2o0ial94k
Submission IAL94K
{ "timeout_ms": 200, "generated_regex": "^\\[(?:[0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4}\\]$", "test_strings_match": "[2001:0db8:0000:0000:0000:ff00:0042:8329]", "test_strings_no_match": "2001:db8:0:0:0:ff00:42:8329\n[2001:db8::1]\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsr8rkj2005332p2mthzvc6z
Submission HZVC6Z
{ "timeout_ms": 200, "generated_regex": "^(?:\\/(?:[^~\\/]|~[01])*)+$", "test_strings_match": "/users/0/name\n/a~1b/~0key", "test_strings_no_match": "users/0\n/bad~2escape\n\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsr8rkj2005632p29l2k69ai
Submission 2K69AI
{ "timeout_ms": 200, "generated_regex": "^sha256:[0-9a-f]{64}$", "test_strings_match": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "test_strings_no_match": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\nSHA256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsrbjqwx002je0p2lj34xrq5
Submission 34XRQ5
{ "timeout_ms": 200, "generated_regex": "^#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$", "test_strings_match": "#fff", "test_strings_no_match": "#ff", "natural_language_description": "Match a hex color code: a '#' followed by exactly 3 or 6 hexadecimal digits." }
cmsrbjqwx002ke0p2bwha8cvu
Submission HA8CVU
{ "timeout_ms": 200, "generated_regex": "^((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])$", "test_strings_match": "192.168.1.1", "test_strings_no_match": "256.1.1.1", "natural_language_description": "Match a dotted-decimal IPv4 address where each of the four oct...
cmsrbjqwx002le0p2ahhqh4ew
Submission HQH4EW
{ "timeout_ms": 200, "generated_regex": "^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])$", "test_strings_match": "2024-01-01\n1999-12-31\n2000-02-29\n2023-11-05", "test_strings_no_match": "2024-13-01\n2024-00-10\n2024-01-32\n2024-1-1\n20240101\n222222222222222222222222222222222222222222222222222222222222222...
cmsrbjqwx002me0p20ot4fzb7
Submission T4FZB7
{ "timeout_ms": 200, "generated_regex": "^([01][0-9]|2[0-3]):[0-5][0-9]$", "test_strings_match": "00:00", "test_strings_no_match": "24:00", "natural_language_description": "Match a 24-hour clock time HH:MM with hours 00-23 and minutes 00-59." }
cmsrbjqwx002ne0p2ep4kpo3x
Submission 4KPO3X
{ "timeout_ms": 200, "generated_regex": "^v?(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)$", "test_strings_match": "1.0.0", "test_strings_no_match": 1, "natural_language_description": "Match a semantic version number MAJOR.MINOR.PATCH with an optional leading 'v' and no leading zeros in any part." }
cmsrbjqwx002oe0p2e7cpw22i
Submission CPW22I
{ "timeout_ms": 200, "generated_regex": "^[0-9]{5}(-[0-9]{4})?$", "test_strings_match": 12345, "test_strings_no_match": 1234, "natural_language_description": "Match a US ZIP code: five digits, optionally followed by a hyphen and four more digits (ZIP+4)." }
cmsrbjqwx002pe0p2sfh2bks8
Submission H2BKS8
{ "timeout_ms": 200, "generated_regex": "^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[^A-Za-z0-9]).{10,}$", "test_strings_match": "Abcdef1!23", "test_strings_no_match": "abcdefgh1!", "natural_language_description": "Match a password of at least 10 characters containing at least one lowercase letter, one uppercase ...
cmsrbjqwx002qe0p2k3mrouva
Submission MROUVA
{ "timeout_ms": 200, "generated_regex": "^[a-z0-9]+(-[a-z0-9]+)*$", "test_strings_match": "my-blog-post-2", "test_strings_no_match": "a--b", "natural_language_description": "Match a URL slug: lowercase letters or digits in hyphen-separated groups, with no leading, trailing, or doubled hyphens." }
cmsrbjqwx002re0p24il7gila
Submission L7GILA
{ "timeout_ms": 200, "generated_regex": "^([0-9A-Fa-f]{2}:){5}[0-9A-Fa-f]{2}$", "test_strings_match": "00:1B:44:11:3A:B7", "test_strings_no_match": "00:1B:44:11:3A", "natural_language_description": "Match a MAC address: six colon-separated pairs of hexadecimal digits." }
cmsrbjqwx002se0p2sc6qmxah
Submission 6QMXAH
{ "timeout_ms": 200, "generated_regex": "^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$", "test_strings_match": "123e4567-e89b-12d3-a456-426614174000", "test_strings_no_match": "123e4567-e89b-12d3-a456", "natural_language_description": "Match a canonical UUID: 8-4-4-4-12 hexadec...
cmsrbjqwx002ue0p2na0xkp0r
Submission 0XKP0R
{ "timeout_ms": 200, "generated_regex": "^[+-]?[0-9]+(\\.[0-9]+)?([eE][+-]?[0-9]+)?$", "test_strings_match": 3.14, "test_strings_no_match": "1.2.3", "natural_language_description": "Match a decimal number with an optional sign, an optional fractional part, and an optional scientific-notation exponent." }
cmsrbjqwx002xe0p2w67r3t1s
Submission 7R3T1S
{ "timeout_ms": 200, "generated_regex": "^<([a-z]+)>[^<]*</\\1>$", "test_strings_match": "<div>text here</div>", "test_strings_no_match": "<p>hello</b>", "natural_language_description": "Match a simple HTML element: an opening tag, inner text without angle brackets, and a matching closing tag with the same lo...
cmsrbjqwx002ye0p24tiyggi1
Submission IYGGI1
{ "timeout_ms": 200, "generated_regex": "^(100|[1-9]?[0-9])%$", "test_strings_match": "100%", "test_strings_no_match": "101%", "natural_language_description": "Match an integer percentage from 0 to 100 followed by a '%' sign, with no leading zeros." }
cmsrbjqwx002ze0p2caml59dh
Submission ML59DH
{ "timeout_ms": 200, "generated_regex": "^(0?[1-9]|1[0-2]):[0-5][0-9] ?([AaPp][Mm])$", "test_strings_match": "12:00 AM", "test_strings_no_match": "13:00 PM", "natural_language_description": "Match a 12-hour clock time with hours 1-12, minutes 00-59, an optional space, and an AM/PM marker in any letter case." ...
cmsrbjqwx0030e0p2kmsk15wb
Submission SK15WB
{ "timeout_ms": 200, "generated_regex": "^([a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,}$", "test_strings_match": "sub.domain.co.uk", "test_strings_no_match": "domain..com", "natural_language_description": "Match a domain name: one or more dot-separated labels of letters, digits, or hyphens, ending in an alphabetic top-leve...
cmsrbjqwx0031e0p2v2o7v538
Submission O7V538
{ "timeout_ms": 200, "generated_regex": "^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$", "test_strings_match": "U29mdHdhcmU=", "test_strings_no_match": "TWF", "natural_language_description": "Match a Base64-encoded string whose length is a multiple of four, using standard alphab...
cmsrbjqwx0033e0p2kh1tw6rk
Submission 1TW6RK
{ "timeout_ms": 200, "generated_regex": "^[A-Za-z0-9_.-]+\\.(txt|csv|json|md|png|jpg)$", "test_strings_match": "data_01.csv", "test_strings_no_match": "report.exe", "natural_language_description": "Match a filename with a base name of letters, digits, dots, underscores or hyphens and an allowed extension (txt...
cmsrbjqwx0034e0p2u2sa3rgk
Submission SA3RGK
{ "timeout_ms": 200, "generated_regex": "^(?=[MDCLXVI])M{0,3}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})$", "test_strings_match": "MCMXCIV", "test_strings_no_match": "IIII", "natural_language_description": "Match a Roman numeral from 1 to 3999 using standard subtractive notation in uppercase." }
cmsrbjqwx0036e0p2w5sg9xqm
Submission SG9XQM
{ "timeout_ms": 200, "generated_regex": "^https?://[A-Za-z0-9.-]+(:[0-9]+)?(/[^\\s]*)?$", "test_strings_match": "https://a.b.co/path?q=1", "test_strings_no_match": "http:/example.com", "natural_language_description": "Match an HTTP or HTTPS URL with a host of letters, digits, dots or hyphens, an optional port...
cmsrbjqwx0037e0p2iohargp4
Submission HARGP4
{ "timeout_ms": 200, "generated_regex": "^[0-9]{4}([ -]?[0-9]{4}){3}$", "test_strings_match": 1234567812345678, "test_strings_no_match": "1234 5678", "natural_language_description": "Match a 16-digit credit-card number in four groups of four digits separated by an optional single space or hyphen." }
cmsrbjqwx0038e0p2vb9iwvc2
Submission 9IWVC2
{ "timeout_ms": 200, "generated_regex": "^[0-9]{1,2}:[0-5][0-9]:[0-5][0-9]$", "test_strings_match": "12:34:56", "test_strings_no_match": "1:60:00", "natural_language_description": "Match a clock duration H:MM:SS or HH:MM:SS with minutes and seconds each 00-59." }
cmsrc9xcp000mq2p2i30fu44t
Submission 0FU44T
{ "timeout_ms": 200, "generated_regex": "^\\d+\\.\\d+\\.\\d+(?:-(?:alpha|beta|rc)\\d*)?$", "test_strings_match": "1.2.3\n2.0.0-rc1\n0.9.1-beta", "test_strings_no_match": "v1.2.3\n1.2\n1.2.3-prod\n1.222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222...
cmsrc9xcp000uq2p25mxz6jko
Submission XZ6JKO
{ "timeout_ms": 200, "generated_regex": "^/api/v1/(?:users|orders)/[1-9]\\d*$", "test_strings_match": [ "/api/v1/users/1", "/api/v1/orders/2048" ], "test_strings_no_match": [ "/api/v1/users/0", "/api/v2/users/1", "/api/v1/items/3", "/api/v1/users/999999999999999999999999999999999999999...
cmsrc9xcp000wq2p2oppwih6o
Submission PWIH6O
{ "timeout_ms": 200, "generated_regex": "^[a-z][a-z0-9_]{3,15}$", "test_strings_match": [ "user_1", "abcd", "a123456789012345" ], "test_strings_no_match": [ "1user", "Abcd", "abc", "axxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx...
cmsrc9xcp000zq2p2vxia8694
Submission IA8694
{ "timeout_ms": 200, "generated_regex": "^(?:[0-9A-F]{2}:){5}[0-9A-F]{2}$", "test_strings_match": [ "AA:BB:CC:DD:EE:FF", "00:1A:2B:3C:4D:5E" ], "test_strings_no_match": [ "aa:BB:CC:DD:EE:FF", "AA-BB-CC-DD-EE-FF", "AA:BB:CC", "AA:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:BB:...
cmsrc9xcp0012q2p2vgj5gwws
Submission J5GWWS
{ "timeout_ms": 200, "generated_regex": "^(?:0|[1-9]\\d?|100)%?$", "test_strings_match": [ "0", "7%", "99", "100%" ], "test_strings_no_match": [ "00", "101%", "-1", "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...
cmsrc9xcp0013q2p2wfuricxm
Submission URICXM
{ "timeout_ms": 200, "generated_regex": "^\\[(?:dev|test|staging|prod)\\] [A-Za-z0-9-]+$", "test_strings_match": [ "[dev] api-1", "[prod] worker9" ], "test_strings_no_match": [ "[DEV] api", "[qa] api", "[prod]", "[prod] xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx...
cmsrcxmxq005kq2p2mkfj12qk
Submission FJ12QK
{ "timeout_ms": 200, "generated_regex": "^#[0-9A-Fa-f]{6}$", "test_strings_match": "#1A2B3C", "test_strings_no_match": "#1A2B3", "natural_language_description": "Match an uppercase six-digit hex color code that begins with a hash sign." }
cmsrcxmxq005lq2p2q1ickuwi
Submission ICKUWI
{ "timeout_ms": 200, "generated_regex": "^[A-Z]{3}$", "test_strings_match": "USD", "test_strings_no_match": "usd", "natural_language_description": "Match a three-letter uppercase ISO currency code such as one used in foreign exchange." }
cmsreik0z0001m2p2mvj1vuyp
Submission J1VUYP
{ "timeout_ms": 200, "generated_regex": "^(?:OPS|API|WEB)-[1-9]\\d{3,5}-P[1-4]$", "test_strings_match": "OPS-1042-P1\nAPI-999999-P4\nWEB-5000-P3", "test_strings_no_match": "DB-1042-P1\nOPS-0001-P2\nOPS-1234567-P1\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik0z0002m2p24nr2sgoy
Submission R2SGOY
{ "timeout_ms": 200, "generated_regex": "^v(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)(?:-(?:rc|beta)\\.[1-9]\\d*)?$", "test_strings_match": "v1.4.2\nv0.0.7-rc.1\nv12.30.0-beta.12", "test_strings_no_match": "1.4.2\nv01.4.2\nv1.2.3-alpha.1\nv1.2.3-rc.0\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik0z0003m2p2xcz2bo6c
Submission Z2BO6C
{ "timeout_ms": 200, "generated_regex": "^\\d{4}-(?:0[1-9]|1[0-2])-(?:0[1-9]|[12]\\d|3[01])T(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:Z|[+-](?:0\\d|1[0-4]):[0-5]\\d)$", "test_strings_match": "2026-08-13T16:20:59Z\n2025-01-01T00:00:00+05:30\n2030-12-31T23:59:59-14:00", "test_strings_no_match": "2026-13-01T12:00:00Z...
cmsreik0z0004m2p24ackgxlx
Submission CKGXLX
{ "timeout_ms": 200, "generated_regex": "^[A-Za-z0-9](?:[A-Za-z0-9._-]*[A-Za-z0-9])?/[A-Za-z0-9](?:[A-Za-z0-9._-]*[A-Za-z0-9])?@(?:[0-9a-f]{7,40}|[A-Za-z][A-Za-z0-9._/-]*)$", "test_strings_match": "openai/sdk@a1b2c3d\nteam_x/service-api@release/2.4\norg/repo@feature_fix-7", "test_strings_no_match": "-org/repo@m...
cmsreik0z0005m2p2ych8llem
Submission H8LLEM
{ "timeout_ms": 200, "generated_regex": "^(?:(?:0|[1-9]\\d?|1\\d{2}|2[0-4]\\d|25[0-5])\\.){3}(?:0|[1-9]\\d?|1\\d{2}|2[0-4]\\d|25[0-5])/(?:[0-9]|[12]\\d|3[0-2])$", "test_strings_match": "10.0.0.0/8\n192.168.1.0/24\n255.255.255.255/32", "test_strings_no_match": "256.1.1.1/24\n01.2.3.4/16\n1.2.3.4/33\naaaaaaaaaaaa...
cmsreik0z0006m2p2lyibxaeg
Submission IBXAEG
{ "timeout_ms": 200, "generated_regex": "^(?:USD|EUR) (?:0|[1-9]\\d{0,2}|[1-9]\\d{0,2}(?:,\\d{3})+)\\.\\d{2}$", "test_strings_match": "USD 0.99\nEUR 12.00\nUSD 1,234,567.89", "test_strings_no_match": "GBP 12.00\nUSD 01.00\nEUR 12,34.00\nUSD 1000.00\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik0z0007m2p2hu5z1ytx
Submission 5Z1YTX
{ "timeout_ms": 200, "generated_regex": "^(?=.{3,40}$)[a-z0-9]+(?:-[a-z0-9]+)*$", "test_strings_match": "api-v2\nworker-01\nprod-cache-7", "test_strings_no_match": "ab\nApi-v2\napi--v2\napi-\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "natural_language_description": "Match Kubernetes-style resource names of ...
cmsreik0z0008m2p22h93occ7
Submission 93OCC7
{ "timeout_ms": 200, "generated_regex": "^[a-z][a-z0-9_]*(?:\\.[a-z][a-z0-9_]*){1,4}$", "test_strings_match": "checkout.new_flow\napi.v2.retry_limit\nmobile.ios.paywall.v3", "test_strings_no_match": "single\napi..retry\nApi.v2\napi.2fast\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik0z0009m2p2cf6ggjz2
Submission 6GGJZ2
{ "timeout_ms": 200, "generated_regex": "^\\d{4}(?:0[1-9]|1[0-2])(?:0[1-9]|[12]\\d|3[01])(?:[01]\\d|2[0-3])[0-5]\\d[0-5]\\d__[a-z]+(?:_[a-z]+){1,5}\\.sql$", "test_strings_match": "20260813162000__create_user_table.sql\n20250101000059__add_index.sql\n20301231235959__backfill_order_status_values.sql", "test_strin...
cmsreik10000am2p299d3et5j
Submission D3ET5J
{ "timeout_ms": 200, "generated_regex": "^bytes=(?:0|[1-9]\\d*)-(?:0|[1-9]\\d*)$", "test_strings_match": "bytes=0-499\nbytes=500-999\nbytes=1000-1000", "test_strings_no_match": "bytes=-500\nbytes=500-\nbytes=01-9\nBytes=0-1\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000bm2p2zq9fr0fw
Submission 9FR0FW
{ "timeout_ms": 200, "generated_regex": "^(?:Mon|Tue|Wed|Thu|Fri|Sat|Sun)(?:-(?:Mon|Tue|Wed|Thu|Fri|Sat|Sun))?@(?:[01]\\d|2[0-3]):[0-5]\\d-(?:[01]\\d|2[0-3]):[0-5]\\d$", "test_strings_match": "Mon-Fri@09:00-17:30\nSat@10:00-14:00\nSun-Mon@23:00-23:59", "test_strings_no_match": "Monday-Friday@09:00-17:00\nMon@24...
cmsreik10000cm2p27oqn3dvl
Submission QN3DVL
{ "timeout_ms": 200, "generated_regex": "^[a-z][a-z0-9]*(?:\\.[a-z][a-z0-9]*)+:[a-z0-9]+(?:-[a-z0-9]+)*:(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)(?:-SNAPSHOT)?$", "test_strings_match": "com.acme:auth-core:2.4.1\nio.data:parser2:0.9.0-SNAPSHOT\norg.example.tools:cli-runner:10.0.3", "test_strings_no_mat...
cmsreik10000dm2p2m85qs6dr
Submission 5QS6DR
{ "timeout_ms": 200, "generated_regex": "^[+-](?:100\\.0|(?:\\d|[1-9]\\d)\\.\\d)%$", "test_strings_match": "+0.0%\n-7.5%\n+100.0%", "test_strings_no_match": "7.5%\n+100.1%\n-00.5%\n+5%\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000em2p2p280iodj
Submission 80IODJ
{ "timeout_ms": 200, "generated_regex": "^(?:[a-z0-9]+(?:-[a-z0-9]+)*\\.){1,5}(?:[a-z0-9]+(?:-[a-z0-9]+)*|[*#])$", "test_strings_match": "orders.created.eu\nbilling.retry.*\nevents.user.#", "test_strings_no_match": "orders\norders.*.eu\n.orders.created\norders..created\norders.-bad\naaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000fm2p202tg8x1l
Submission TG8X1L
{ "timeout_ms": 200, "generated_regex": "^(?:[0-9A-F]{2}(?::[0-9A-F]{2}){5}|[0-9a-f]{2}(?:-[0-9a-f]{2}){5})$", "test_strings_match": "AA:0B:CC:12:EF:90\naa-0b-cc-12-ef-90\n00:11:22:33:44:55", "test_strings_no_match": "aa:0b:cc:12:ef:90\nAA-0B-CC-12-EF-90\nAA:0B-cc:12:EF:90\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000gm2p277kbgjz1
Submission KBGJZ1
{ "timeout_ms": 200, "generated_regex": "^(?:[a-z]+(?:-[a-z]+)*/)?(?:TRACE|DEBUG|INFO|WARN|ERROR)$", "test_strings_match": "INFO\napi-gateway/ERROR\ndb/WARN", "test_strings_no_match": "info\n-api/ERROR\napi-/INFO\napi/FATAL\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000hm2p2t29qvzzy
Submission 9QVZZY
{ "timeout_ms": 200, "generated_regex": "^[-dl][r-][w-][xSs-][r-][w-][xSs-][r-][w-][xTt-]$", "test_strings_match": "-rwxr-xr--\ndrwsr-sr-x\nlrwxrwxrwx", "test_strings_no_match": "rwxr-xr--\n-rwxr-xr-tx\n-rwqr-xr--\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000im2p28fpzru7k
Submission PZRU7K
{ "timeout_ms": 200, "generated_regex": "^20[2-9]\\d\\.(?:0[1-9]|1[0-2])\\.(?:0[1-9]|[12]\\d|3[01])\\+[1-9]\\d*$", "test_strings_match": "2026.08.13+1\n2020.01.01+42\n2099.12.31+999", "test_strings_no_match": "2019.12.31+1\n2026.13.01+1\n2026.08.13+0\n2026.8.13+1\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000jm2p287rj2u3m
Submission RJ2U3M
{ "timeout_ms": 200, "generated_regex": "^s3://[a-z0-9](?:[a-z0-9.-]{1,61}[a-z0-9])?/[^\\s]+$", "test_strings_match": "s3://data-prod/reports/2026/08/file.csv\ns3://abc/x\ns3://logs.01/a-b_c.json", "test_strings_no_match": "S3://abc/x\ns3://ab/x\ns3://-abc/x\ns3://abc/has space\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000km2p2ji8bbj3h
Submission 8BBJ3H
{ "timeout_ms": 200, "generated_regex": "^cache:[a-z][a-z0-9_]*(?::[a-z][a-z0-9_]*){1,4}$", "test_strings_match": "cache:user:id42\ncache:session:user_7:active\ncache:api:v2:retry_count", "test_strings_no_match": "user:42\ncache:user\ncache:user::id\ncache:User:id42\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000lm2p2hfau9r7e
Submission AU9R7E
{ "timeout_ms": 200, "generated_regex": "^:[a-z](?![a-z0-9_]*__)[a-z0-9_]{1,29}[a-z0-9]$", "test_strings_match": ":user_id\n:p42_value\n:order2_total", "test_strings_no_match": ":id\n:user__id\n:user_\n:User_id\n:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000mm2p28wbza6z1
Submission BZA6Z1
{ "timeout_ms": 200, "generated_regex": "^[+-]?(?:90(?:\\.0{1,6})?|(?:[0-8]?\\d)(?:\\.\\d{1,6})?),[+-]?(?:180(?:\\.0{1,6})?|(?:1[0-7]\\d|[0-9]?\\d)(?:\\.\\d{1,6})?)$", "test_strings_match": "0,0\n-33.8688,+151.2093\n+90.000000,-180", "test_strings_no_match": "90.1,0\n0,180.000001\n-91,45\n12.1234567,10\naaaaaaa...
cmsreik10000nm2p27mg476li
Submission G476LI
{ "timeout_ms": 200, "generated_regex": "^(?:W/)?\"[A-Za-z0-9._-]{1,32}\"$", "test_strings_match": "\"abc123\"\nW/\"rev-42\"\n\"_cache.v2\"", "test_strings_no_match": "abc123\nw/\"abc\"\nW/\"\"\n\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000om2p2bx10dn8t
Submission 10DN8T
{ "timeout_ms": 200, "generated_regex": "^@[a-z0-9][a-z0-9-]{0,28}[a-z0-9]/[a-z0-9][a-z0-9-]{0,28}[a-z0-9]$", "test_strings_match": "@acme/core-lib\n@x1/ui2\n@team-7/parser-v2", "test_strings_no_match": "acme/core\n@a/x\n@-acme/core\n@acme/core-\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000pm2p2aj9cxzyk
Submission 9CXZYK
{ "timeout_ms": 200, "generated_regex": "^(?:\\d{2}|[1-9]\\d{2}):[0-5]\\d:[0-5]\\d$", "test_strings_match": "00:00:00\n23:59:59\n120:05:09", "test_strings_no_match": "1:00:00\n012:00:00\n1000:00:00\n10:60:00\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000qm2p229x76xav
Submission X76XAV
{ "timeout_ms": 200, "generated_regex": "^[A-Z][A-Z0-9_]*=(?:[^\\s\"]+|\"(?:[^\"\\\\]|\\\\.)*\")$", "test_strings_match": "PORT=8080\nGREETING=\"hello world\"\nPATH_HINT=/tmp/cache-v2", "test_strings_no_match": "port=8080\nEMPTY=\nBAD=\"unterminated\nX=has space\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000rm2p2000vxb2p
Submission 0VXB2P
{ "timeout_ms": 200, "generated_regex": "^[A-Za-z0-9][A-Za-z0-9-]{0,18}[A-Za-z0-9]/[A-Za-z0-9][A-Za-z0-9-]{0,18}[A-Za-z0-9]#[1-9]\\d*$", "test_strings_match": "acme/api#42\nTeam-7/core-lib#1\nxy/z9#9999", "test_strings_no_match": "a/repo#1\nacme/-repo#1\nacme/repo#01\nacme/repo#0\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
cmsreik10000sm2p2g8s91b3e
Submission S91B3E
{ "timeout_ms": 200, "generated_regex": "^[A-Za-z_][A-Za-z0-9_]*\\{[A-Za-z_][A-Za-z0-9_]*=[a-z0-9]+(?:,[A-Za-z_][A-Za-z0-9_]*=[a-z0-9]+){0,3}\\}$", "test_strings_match": "http_requests{method=get,status=200}\ncpu{core=0}\nqueue_depth{region=us1,tier=p2,node=n7}", "test_strings_no_match": "http_requests{}\n1metr...
cmsreik10000tm2p2damzzevg
Submission MZZEVG
{ "timeout_ms": 200, "generated_regex": "^[a-z0-9]+(?:-[a-z0-9]+)*/(?:stable|beta|canary)/(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)$", "test_strings_match": "desktop-app/stable/4.2\napi2/canary/0.9\nworker-node/beta/12.0", "test_strings_no_match": "Desktop/stable/1.0\napp/nightly/1.0\napp/stable/01.2\napp-/beta/1.0\naa...
cmsreik10000um2p2p948owed
Submission 48OWED
{ "timeout_ms": 200, "generated_regex": "^\\[[a-z]+(?:-[a-z]+)*:[0-9A-F]{16}\\]$", "test_strings_match": "[api:0123ABCDEF456789]\n[order-worker:FFFFFFFF00000000]\n[db:1234567890ABCDEF]", "test_strings_no_match": "api:0123ABCDEF456789\n[API:0123ABCDEF456789]\n[api:0123abcdef456789]\n[api:1234]\naaaaaaaaaaaaaaaaa...
cmsrfh788001ty8p2b8shyq1l
Submission SHYQ1L
{ "timeout_ms": 200, "generated_regex": "^(?:dev|stage|prod)/[a-z0-9]+(?:-[a-z0-9]+)*@\\d{4}(?:0[1-9]|1[0-2])(?:0[1-9]|[12]\\d|3[01])$", "test_strings_match": "prod/api-gateway@20260813\nstage/worker2@20251231\ndev/cache-node@20260101", "test_strings_no_match": "qa/api@20260813\nprod/-api@20260813\nprod/api@202...
cmsrfh788001uy8p2o0vi75x7
Submission VI75X7
{ "timeout_ms": 200, "generated_regex": "^-?(?:0|[1-9]\\d{0,3})\\.\\.-?(?:0|[1-9]\\d{0,3})$", "test_strings_match": "-10..25\n0..0\n9999..-9999", "test_strings_no_match": "01..2\n-10000..2\n1...2\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!", "natural...
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Regex Pattern Generation with Verified Match Sets

A dataset of regex pattern generation with verified match sets examples for training and evaluation. Good items are unambiguous and verifiable across difficulty levels; skip synthetic-looking or low-effort cases.

About

This dataset was produced by the DataBounty community and published here as part of an open, karma-only program.

  • Accepted items: 1000
  • Language: Regex
  • Framework: Community
  • License: CC-BY-4.0

Contributors

  • @advisorygopher
  • @ajaysomavarapu
  • @aravindkasam
  • @ashokkadali3
  • @benam2k
  • @bhanu-n
  • @bravebooby
  • @combinedgoat
  • @culturalturtle
  • @directfly
  • @dutchswan
  • @famousgoose
  • @gladiator
  • @integralgoldfish
  • @kumar-k
  • @maheshk218
  • @odysseus
  • @pleasedgiraffe
  • @quietraccoon
  • @raja
  • @robber
  • @sparemockingbird
  • @sravan
  • @sriramreddy
  • @starlord
  • @vamshi
  • @vinodhsnair

Files

  • data/items.jsonl — the accepted dataset items (one JSON object per line).
  • manifest.json — machine-readable provenance, license, and credit metadata.
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