Regex Roulette · #26 · 2026-04-30
Match words ending in "-ing"
Difficulty 1/3
How to play
Write a regex that matches all green strings and rejects all red strings. Live feedback shows which strings pass. Shorter patterns score better.
Must match
- running — not yet evaluated
- coding — not yet evaluated
- testing — not yet evaluated
- sing — not yet evaluated
Must not match
- ring-a — not yet evaluated
- ingot — not yet evaluated
- bingo — not yet evaluated
- singer — not yet evaluated
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Pattern body only — slashes and flags (e.g. /g, /i) aren't part of the input.
0/200 chars
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