# Go Fish/Mathematica

The AI simply picks the rank that it has the most of.

Go Fish/Mathematica is part of Go Fish. You may find other members of Go Fish at Category:Go Fish.
```ranks = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven",
"Eight", "Nine", "Ten", "Jack", "Queen", "King"};
suits = {"Clubs", "Diamonds", "Hearts", "Spades"};
deck = Tuples[{Range[13], Range[4]}];
cardName[{rank_, suit_}] := ranks[[rank]] <> " of " <> suits[[suit]];
Attributes[drawCards] = {HoldRest};
drawCards[num_, src_, dest_] :=
Module[{cards = RandomSample[src, Min[num, Length[src]]]},
dest = Join[dest, cards];
src = Fold[DeleteCases[#, #2, 1, Count[cards, #2]] &, src,
Union[cards]];];
fixHand[{a___, {rank_, _}, b___, {rank_, _}, c___, {rank_, _},
d___, {rank_, _}, e___}, prev_] :=
fixHand[{a, b, c, d, e}, prev + 1];
fixHand[hand_, prev_] := {hand, prev};
player = opp = {};
drawCards[9, deck, player];
drawCards[9, deck, opp];
{player, playerBooks} = fixHand[player, 0];
{opp, oppBooks} = fixHand[opp, 0];
playerTurn = True;
While[player != {} || opp != {} || deck != {},
If[player == {}, drawCards[1, deck, player]];
If[opp == {}, drawCards[1, deck, opp]];
If[playerTurn,
If[player == {},
DialogNotebook[{TextCell[
"You have no cards and the deck is empty!",
FontFamily -> "Arial"], DefaultButton[]}]],
Module[{choice =
ChoiceDialog[
"Your opponent has " <> IntegerString[oppBooks] <>
" books, and you have " <> IntegerString[playerBooks] <>
" books and these cards: " <>
StringRiffle[cardName /@ SortBy[player, #[[1]] + #[[2]]/10 &],
", "] <> "\nWhich rank will you call?",
ranks[[#]] -> # & /@ Union[First /@ player]]},
If[MemberQ[opp, {choice, _}],
player = Join[player, Cases[opp, {choice, _}]];
opp = DeleteCases[opp, {choice, _}], drawCards[1, deck, player];
DialogNotebook[{TextCell["Go fish! You gained a card.",
FontFamily -> "Arial"], DefaultButton[]}]];
playerTurn = False]]],
If[opp != {},
Module[{choice = Commonest[First /@ opp, 1][[1]]},
If[MemberQ[player, {choice, _}],
opp = Join[opp, Cases[player, {choice, _}]];
player = DeleteCases[player, {choice, _}],
playerTurn = True]]]]; {player, playerBooks} =
fixHand[player, playerBooks]; {opp, oppBooks} =
fixHand[opp, oppBooks]]; MessageDialog[
Which[oppBooks > playerBooks,
"Your opponent wins with " <> IntegerString[oppBooks] <> " books!",
playerBooks > oppBooks,
"You win with " <> IntegerString[playerBooks] <> " books!", True,
"Tie!"]];
```