Regular Expressions 101

The regex quiz is an interactive way to sharpen your understanding of regular expressions through progressively harder challenges. Each task gives you a problem to solve, then lets you compare your result with other solutions and keep improving from there. It is evaluated with the PCRE2 engine, so it is a practical way to learn useful structures while testing your thinking against real constraints.

Use your account to participate in the quiz, challenge yourself, grow your regex skills, and compare your results with other participants as you work through the challenges. Sign In when you're ready.