8 kyu
Simple validation of a username with regex
13,329 of 23,724daymos
Description:
Write a simple regex to validate a username. Allowed characters are:
- lowercase letters,
- numbers,
- underscore
Length should be between 4 and 16 characters (both included).
Regular Expressions
Fundamentals
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Stats:
| Created | Jan 23, 2016 |
| Published | Jan 23, 2016 |
| Warriors Trained | 35390 |
| Total Skips | 1743 |
| Total Code Submissions | 88720 |
| Total Times Completed | 23724 |
| JavaScript Completions | 13329 |
| CoffeeScript Completions | 44 |
| Python Completions | 6701 |
| Ruby Completions | 741 |
| C# Completions | 1094 |
| Elixir Completions | 153 |
| Java Completions | 1931 |
| C Completions | 253 |
| Total Stars | 374 |
| % of votes with a positive feedback rating | 92% of 2321 |
| Total "Very Satisfied" Votes | 1984 |
| Total "Somewhat Satisfied" Votes | 292 |
| Total "Not Satisfied" Votes | 45 |
