Day 7: Camel Cards

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  • @mykl
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    4
    edit-2
    1 year ago

    It’s Uiua time!

    It works, but even I can’t understand this code any more as I’m well into my second beer, so don’t put this into production, okay? (Run it here if you dare.)

    {"32T3K 765"
     "T55J5 684"
     "KK677 28"
     "KTJJT 220"
     "QQQJA 483"}
    StoInt ← /(+×10)▽×⊃(≥0)(≤9).-@0
    ToHex ← ⊏:"  23456789abcde":"  23456789TJQKA"
    ToHexJ ← ⊏:"  23456789a0cde":"  23456789TJQKA"
    # A hand of "311" with one J will have same rank as "41"
    # Dots indicate impossible hands.
    Rankings ← {
      {"11111" "2111" "221" "311" "32" "41" "5"}   # 0
      {"..." "11111" ".." "2111" "221" "311" "41"} # 1
      {"..." "....." ".." "2111" "..." "221" "32"} # 2
      {"..." "....." ".." "...." "..." "311" "32"} # 3
      {"..." "....." ".." "...." "..." "..." "41"} # 4
      {"..." "....." ".." "...." "..." "..." "5"}  # 5
    }
    RankHand ← (
      +@0⊏⍖.⊕⧻⊛⊢⍉⇌⊕∘⍖...          # Count instances, sort desc, to string
      ⊗⊃⊢(⊔⊡:Rankings/+=@0⊢↘1)⊟∩□ # Use table to get ranking
    )
    ScoreHands! ← (
      ≡(⊐⊟⊓(⊐⊟RankHand.^1⊔)∘⍘⊟) # Rank every hand
      /+/×⊟+1⇡⧻.∵⊔≡(⊢↘1)⊏⍏≡⊢.   # Sort based on rankings
    )
    ⍉⊟⊓∘(∵StoInt)⍘⊟⍉≡(⊐⊜∘≠@\s.) # Parse input
    ⊃(ScoreHands!ToHex)(ScoreHands!ToHexJ)