37 lines
913 B
Go
37 lines
913 B
Go
package poker
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import (
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"math/rand"
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"time"
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)
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// Card represents a playing card as a two-character string.
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// Ranks: 2-9, T, J, Q, K, A
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// Suits: s (spades), h (hearts), d (diamonds), c (clubs)
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// Examples: "As", "Kh", "Td", "2c"
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var ranks = []string{"2", "3", "4", "5", "6", "7", "8", "9", "T", "J", "Q", "K", "A"}
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var suits = []string{"s", "h", "d", "c"}
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// NewDeck returns a freshly shuffled 52-card deck.
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func NewDeck() []string {
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deck := make([]string, 0, 52)
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for _, r := range ranks {
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for _, s := range suits {
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deck = append(deck, r+s)
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}
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}
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rng := rand.New(rand.NewSource(time.Now().UnixNano()))
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rng.Shuffle(len(deck), func(i, j int) {
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deck[i], deck[j] = deck[j], deck[i]
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})
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return deck
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}
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// Deal removes and returns the top n cards from the deck.
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func Deal(deck []string, n int) (cards []string, remaining []string) {
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if n > len(deck) {
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n = len(deck)
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}
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return deck[:n], deck[n:]
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}
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