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更优雅的写法?(一副牌)

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Norhther · 技术社区 · 7 年前

我现在正在写一个21点模拟器,我正在生成n副牌来玩:

int i;
int value = 1;
for (i = 0; i < deck->n_cards; i++) {
    deck->cards[i] = value;
    value++;
    if (value == 14) value = 1;
}

(卡组->n_卡%52==0)

我试过用模运算来写同样的方法,但是我不能用超过一个的方法来完成。我觉得用那个if真的很难看。有更优雅的解决方案吗?

3 回复 | 直到 7 年前

Eliyahu Machluf 7 年前

我不熟悉21点游戏,但是我从你的代码中了解到,值的范围是1到13。请尝试以下代码:

int i;
for (i = 0; i < deck->n_cards; i++) {
    deck->cards[i] = (i % 13) + 1;
}

i%13的范围是0到12,再加上一个,使这个范围为1到13

CIsForCookies 7 年前

如果您想要的是,给定一个指向52 int数组的指针,用4组1-13填充它,一个更简单的方法是,IMO:

#include <stdio.h>

typedef struct deck{
    int n_cards;
    int cards[52];
}deck_t;

 int main(void) {

    deck_t *deck = malloc(sizeof(deck_t));
    deck->n_cards = 52;

    int value = 1, suit_size = 13, num_of_suits = 4;

    /* 1st option*/
    for(int i = 0; i < deck->n_cards / num_of_suits; i++){
        for(int j = 0; j < deck->n_cards; j += suit_size){
            deck->cards[i+j] = value;
        }
        value++;
    }

    for(int i = 0; i < deck->n_cards; i++){
        printf("%d ", deck->cards[i]);
    }

    /* 2nd option*/
    value = 0;
    for(int i = 0; i < deck->n_cards; i++){
        deck->cards[i] = 1 + value++ % 13;
    }

    for(int i = 0; i < deck->n_cards; i++){
        printf("%d ", deck->cards[i]);
    }
    return 0;
}

cleblanc 7 年前

#define CARDS_IN_DECK 52
#define CARDS_IN_SUIT 13
#define DECKS_IN_BOOT 8
#define SUITS_IN_DECK 4

#define HEARTS 0
#define SPADES 1
#define CLUBS  2
#define DIAMONDS 3
#define CARD_SUIT(c)  suits[((c)/CARDS_IN_SUIT)]
#define CARD_FACE(c)  cards[((c)%CARDS_IN_SUIT)]
#define CARD_VALUE(c) cardValue[((c)%CARDS_IN_SUIT)]

int deck[DECKS_IN_BOOT][CARDS_IN_DECK];
int boot, card;
int needsShuffle = 1;
const char *suits[] = {"Hearts", "Spades", "Clubs", "Diamonds"};
const char *cards[] = {"Ace", "Two", "Three", "Four", "Five", "Six",
                  "Seven", "Eight", "Nine", "Ten", "Jack", "Queen", "King"};
const int cardValue[] = {11, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, 10};

void shuffle()
{
    int num_shuffles = 1000;
    int i, j, k, m, n, temp;

    printf("\n\t Shuffling ... \n");
    /* Create the boot */
    for (i=0;i<DECKS_IN_BOOT;i++)
        for (j=0;j<CARDS_IN_DECK;j++)
            deck[i][j] = j;

    for ( ;num_shuffles--; )
    {
        m = rand() % DECKS_IN_BOOT;
        n = rand() % DECKS_IN_BOOT;

        j = rand() % CARDS_IN_DECK;
        k = rand() % CARDS_IN_DECK;

        temp = deck[n][j];
        deck[n][j] = deck[m][k];
        deck[m][k] = temp;
    }
    needsShuffle = boot = card = 0;
}

void testPrintDeck()
{
    int i, j;

    /* Create the boot */
    for (i=0;i<DECKS_IN_BOOT;i++)
        for (j=0;j<CARDS_IN_DECK;j++)
            printf("%d %s %s\n",
                   deck[i][j],
                   CARD_FACE(deck[i][j]),
                   CARD_SUIT(deck[i][j]));
}

main(int c, char *v[])
{
    srand(time(0));
    shuffle();
    testPrintDeck();
}