Card Number Validation in Ruby in Chars Play Hole
12th in Ruby and 252nd overall.
Last tested .
| Bytes | Chars | Submitted |
|---|---|---|
| 62 | 62 | |
| 63 | 63 | |
| 64 | 64 | |
| 65 | 65 | |
| 67 | 67 |
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