Skip to main content
{} stackoverfun

Regex Roulette · #31 · 2026-05-05

Match semantic version strings (X.Y.Z)

Difficulty 2/3

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

  • 1.0.0 — not yet evaluated
  • 10.2.3 — not yet evaluated
  • 0.0.1 — not yet evaluated
  • 2.14.0 — not yet evaluated

Must not match

  • 1.0 — not yet evaluated
  • 1.0.0.0 — not yet evaluated
  • v1.0.0 — not yet evaluated
  • 1.0.0-beta — not yet evaluated

Loading your progress...

Pattern body only — slashes and flags (e.g. /g, /i) aren't part of the input.

0/200 chars

Type a regex that matches all green strings and rejects all red strings · Back to hub