C经典算法之洗扑克牌（乱数排列）

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define N 52

int main(void) {
    int poker[N + 1];
    int i, j, tmp, remain;

    // 初始化阵列 
    for(i = 1; i <= N; i++)
        poker[i] = i; 

    srand(time(0));

    // 洗牌 
    for(i = 1; i <= N; i++) {
        j = rand() % 52 + 1;
        tmp = poker[i];
        poker[i] = poker[j]; 
        poker[j] = tmp; 
    }

    for(i = 1; i <= N; i++) {
        // 判断花色 
        switch((poker[i]-1) / 13) { 
            case 0: 
                printf("桃"); break;
            case 1: 
                printf("心"); break;