Jump Trading

Implement a card set detection system that finds the strongest possible set.

Card Format: "" (e.g., "10S", "QH")

• Suits: S > H > D > C
• Ranks: 2-10, J, Q, K, A (ascending)

Sets (weakest to strongest):

1. Single Card

• Highest rank card
• Suit irrelevant

2. Pair

Example: {
  "set_name": "pair",
  "selected_cards": ["10H", "10S"]
}

3. Triple

Example: {
  "set_name": "triple",
  "selected_cards": ["AH", "AD", "AC"]
}

4. Five in a Row

Example: {
  "set_name": "five in a row",
  "selected_cards": ["7S", "8S", "9S", "10S", "JC"]
}

5. Suit

Example: {
  "set_name": "suit",
  "selected_cards": ["2D", "4D", "6D", "8D", "9D"]
}

6. Triple and Pair

Example: {
  "set_name": "a triple and a pair",
  "selected_cards": ["10D", "10H", "10C", "JH", "JC"]
}

You are given N cards with suits (S, H, D, C) and ranks (2-10, J, Q, K, A). Each card is formatted as "". Detect the strongest possible card set.

Card Sets (weakest to strongest):

1. Single Card

Name: "single card"
Highest rank card, suit irrelevant

2. Pair

Name: "pair"
Example: {
  "set_name": "pair",
  "selected_cards": ["10H", "10S"]
}

3. Triple

Name: "triple"
Example: {
  "set_name": "triple",
  "selected_cards": ["AH", "AD", "AC"]
}

4. Five in a Row

Name: "five in a row"
Example: {
  "set_name": "five in a row",
  "selected_cards": ["7S", "8S", "9S", "10S", "JC"]
}

5. Suit (5 cards)

Name: "suit"
Example: {
  "set_name": "suit",
  "selected_cards": ["2D", "4D", "6D", "8D", "9D"]
}
Suit order (highest to lowest): S > H > D > C

6. Triple and Pair

Name: "a triple and a pair"
Example: {
  "set_name": "a triple and a pair",
  "selected_cards": ["10D", "10H", "10C", "JH", "JC"]
}

System design question with multiple components: