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    The Gray Code Decoder and Gray Code Encoder holes will go live in approximately . Why not try and solve them ahead of time?

    GrayJoKing (they/them) 🇦🇺

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    123 / 126 Holes

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    4 Holes Authored

    Card Number Validation in PHP in Chars Play Hole

    9th in PHP and 358th overall.

    Last tested .

    Runtime of .

    Bytes Chars Submitted
    90 90
    91 91
    92 92
    93 93