Day 7: Camel Cards

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  • mykl@lemmy.world
    4·
    11 months 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)