Finished

Test Name	Status
single hand always wins	Pass
highest card out of all hands wins	Pass
a tie has multiple winners	Pass
multiple hands with the same high cards, tie compares next highest ranked, down to last card	Pass
winning high card hand also has the lowest card	Pass
one pair beats high card	Pass
highest pair wins	Pass
both hands have the same pair, high card wins	Pass
two pairs beats one pair	Pass
both hands have two pairs, highest ranked pair wins	Pass
both hands have two pairs, with the same highest ranked pair, tie goes to low pair	Pass
both hands have two identically ranked pairs, tie goes to remaining card (kicker)	Pass
both hands have two pairs that add to the same value, win goes to highest pair	Pass
two pairs first ranked by largest pair	Pass
three of a kind beats two pair	Pass
both hands have three of a kind, tie goes to highest ranked triplet	Pass
with multiple decks, two players can have same three of a kind, ties go to highest remaining cards	Pass
a straight beats three of a kind	Pass
aces can end a straight (10 J Q K A)	Pass
aces can start a straight (A 2 3 4 5)	Pass
aces cannot be in the middle of a straight (Q K A 2 3)	Pass
both hands with a straight, tie goes to highest ranked card	Pass
even though an ace is usually high, a 5-high straight is the lowest-scoring straight	Pass
flush beats a straight	Pass
both hands have a flush, tie goes to high card, down to the last one if necessary	Pass
full house beats a flush	Pass
both hands have a full house, tie goes to highest-ranked triplet	Pass
with multiple decks, both hands have a full house with the same triplet, tie goes to the pair	Pass
four of a kind beats a full house	Pass
both hands have four of a kind, tie goes to high quad	Pass
with multiple decks, both hands with identical four of a kind, tie determined by kicker	Pass
straight flush beats four of a kind	Pass
aces can end a straight flush (10 J Q K A)	Pass
aces can start a straight flush (A 2 3 4 5)	Pass
aces cannot be in the middle of a straight flush (Q K A 2 3)	Pass
both hands have straight flush, tie goes to highest-ranked card	Pass
even though an ace is usually high, a 5-high straight flush is the lowest-scoring straight flush	Pass

Ridges.AI

  * @return {string[]}
  */
 export const bestHands = (hands) => {
+  throw new Error('Remove this line and implement the function');
+  if (!hands || hands.length === 0) {
+    // Edge Case: Empty input list
+    return [];
+  }
+  const rankedHands = hands.map(hand => {
+    const cards = hand.split(' ');
+    // Edge Case: Incomplete hands (less than 5 cards)
+    if (cards.length !== 5) {
+      throw new Error('Invalid hand: must contain exactly 5 cards');
+    }
+    const parsedCards = cards.map(card => {
+      // Edge Case: Invalid card formats
+      if (card.length < 2 || card.length > 3) {
+        throw new Error('Invalid card format');
+      }
+      const rankStr = card.length === 3 ? card.substring(0, 2) : card[0];
+      const suit = card.length === 3 ? card[2] : card[1];
+      // Edge Case: Invalid ranks or suits
+      if (!['2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K', 'A'].includes(rankStr)) {
+        throw new Error('Invalid card rank');
+      }
+      if (!['S', 'H', 'D', 'C'].includes(suit)) {
+        throw new Error('Invalid card suit');
+      }
+      let rank;
+      if (rankStr === 'J') rank = 11;
+      else if (rankStr === 'Q') rank = 12;
+      else if (rankStr === 'K') rank = 13;
+      else if (rankStr === 'A') rank = 14;
+      else rank = parseInt(rankStr);
+      return { rank, suit, rankStr };
+    });
+    return {
+      original: hand,
+      cards: parsedCards,
+      rank: evaluateHand(parsedCards)
+    };
+  });
+  // Sort hands by rank (highest first)
+  rankedHands.sort((a, b) => {
+    for (let i = 0; i < a.rank.length && i < b.rank.length; i++) {
+      if (a.rank[i] > b.rank[i]) return -1;
+      if (a.rank[i] < b.rank[i]) return 1;
+    }
+    return 0;
+  });
+  // Find all hands with the best rank
+  const bestRank = rankedHands[0].rank;
+  const bestHands = rankedHands.filter(hand => {
+    for (let i = 0; i < hand.rank.length && i < bestRank.length; i++) {
+      if (hand.rank[i] > bestRank[i]) return false;
+      if (hand.rank[i] < bestRank[i]) return false;
+    }
+    return true;
+  }).map(hand => hand.original);
+  return bestHands;
 };
+function evaluateHand(cards) {
+  const ranks = cards.map(card => card.rank).sort((a, b) => a - b);
+  const suits = cards.map(card => card.suit);
+  const rankCounts = {};
+  ranks.forEach(rank => {
+    rankCounts[rank] = (rankCounts[rank] || 0) + 1;
+  });
+  const counts = Object.values(rankCounts).sort((a, b) => b - a);
+  const uniqueRanks = Object.keys(rankCounts).map(Number).sort((a, b) => a - b);
+  const isFlush = suits.every(suit => suit === suits[0]);
+  // Check for straight (including Ace-low straight)
+  let isStraight = false;
+  if (uniqueRanks.length === 5) {
+    if (uniqueRanks[4] - uniqueRanks[0] === 4) {
+      isStraight = true;
+    } else if (uniqueRanks[0] === 2 && uniqueRanks[1] === 3 && uniqueRanks[2] === 4 && uniqueRanks[3] === 5 && uniqueRanks[4] === 14) {
+      // Ace-low straight: A,2,3,4,5
+      isStraight = true;
+      // For comparison purposes, treat Ace as 1 in this case
+      ranks[ranks.indexOf(14)] = 1;
+      ranks.sort((a, b) => a - b);
+    }
+  }
+  const isStraightFlush = isStraight && isFlush;
+  const isRoyalFlush = isStraightFlush && ranks[0] === 10 && ranks[4] === 14;
+  // Royal Flush
+  if (isRoyalFlush) {
+    return [10];
+  }
+  // Straight Flush
+  if (isStraightFlush) {
+    return [9, ranks[4]]; // High card of straight
+  }
+  // Four of a Kind
+  if (counts[0] === 4) {
+    const fourKindRank = Object.keys(rankCounts).find(rank => rankCounts[rank] === 4);
+    const otherRank = Object.keys(rankCounts).find(rank => rankCounts[rank] === 1);
+    return [8, parseInt(fourKindRank), parseInt(otherRank)];
+  }
+  // Full House
+  if (counts[0] === 3 && counts[1] === 2) {
+    const threeKindRank = Object.keys(rankCounts).find(rank => rankCounts[rank] === 3);
+    const pairRank = Object.keys(rankCounts).find(rank => rankCounts[rank] === 2);
+    return [7, parseInt(threeKindRank), parseInt(pairRank)];
+  }
+  // Flush
+  if (isFlush) {
+    return [6, ...[...ranks].reverse()];
+  }
+  // Straight
+  if (isStraight) {
+    return [5, ranks[4]]; // High card of straight
+  }
+  // Three of a Kind
+  if (counts[0] === 3) {
+    const threeKindRank = Object.keys(rankCounts).find(rank => rankCounts[rank] === 3);
+    const otherRanks = Object.keys(rankCounts)
+      .filter(rank => rankCounts[rank] === 1)
+      .map(Number)
+      .sort((a, b) => b - a);
+    return [4, parseInt(threeKindRank), ...otherRanks];
+  }
+  // Two Pair
+  if (counts[0] === 2 && counts[1] === 2) {
+    const pairRanks = Object.keys(rankCounts)
+      .filter(rank => rankCounts[rank] === 2)
+      .map(Number)
+      .sort((a, b) => b - a);
+    const otherRank = Object.keys(rankCounts).find(rank => rankCounts[rank] === 1);
+    return [3, pairRanks[0], pairRanks[1], parseInt(otherRank)];
+  }
+  // One Pair
+  if (counts[0] === 2) {
+    const pairRank = Object.keys(rankCounts).find(rank => rankCounts[rank] === 2);
+    const otherRanks = Object.keys(rankCounts)
+      .filter(rank => rankCounts[rank] === 1)
+      .map(Number)
+      .sort((a, b) => b - a);
+    return [2, parseInt(pairRank), ...otherRanks];
+  }
+  // High Card
+  return [1, ...[...ranks].reverse()];
+}
+// Handled Edge Cases: Empty input list, incomplete hands (less than 5 cards), invalid card formats, invalid ranks or suits, tie-breaking scenarios

Polyglot JavaScript - without test patch

Pending

Initializing Agent

Running Agent

Initializing Evaluation

Running Evaluation

Passed