1042 Shuffling Machine (20)(20 分)

本文介绍了一个使用C++实现的纸牌洗牌程序。该程序通过特定算法将一副54张的纸牌进行多次洗牌,并按照指定的格式输出每一张牌。文章详细展示了如何初始化纸牌数组、读取洗牌顺序以及执行洗牌过程。

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#include<iostream>
#include<string>
#include<cstring>
using namespace std;
const int maxn = 1e3 + 10;
int num[maxn], temp[maxn],shuff[maxn], k;
void show(int n)
{
	if (n <= 13)printf("S%d", n);
	else if (n <= 26)printf("H%d", n - 13);
	else if (n <= 39)printf("C%d", n - 26);
	else if (n <= 52)printf("D%d", n - 39);
	else printf("J%d", n - 52);
}
int main()
{
	for (int i = 1; i <= 54; i++)num[i] = i;
	scanf("%d", &k);
	for (int i = 1; i <= 54; i++)scanf("%d", &shuff[i]);
	while (k--)
	{
		for (int i = 1; i <= 54; i++)
		{
			temp[shuff[i]] = num[i];
		}
		for (int i = 1; i <= 54; i++)num[i] = temp[i];
	}
	for (int i = 1; i <= 54; i++)
	{
		show(num[i]);
		if (i != 54)printf(" ");
	}
	return 0;
}

 

A shuffling machine in C++ can be implemented using an array to represent the deck of cards and using the random number generator to shuffle the cards. Here is a sample code for a shuffling machine: ``` #include <iostream> #include <cstdlib> #include <ctime> using namespace std; const int NUM_CARDS = 52; class ShufflingMachine { private: int deck[NUM_CARDS]; int position; public: ShufflingMachine() { for (int i = 0; i < NUM_CARDS; i++) { deck[i] = i; } position = 0; } void shuffle() { srand(time(NULL)); for (int i = 0; i < NUM_CARDS; i++) { int j = rand() % NUM_CARDS; swap(deck[i], deck[j]); } position = 0; } int dealCard() { if (position >= NUM_CARDS) { shuffle(); } return deck[position++]; } }; int main() { ShufflingMachine shuffler; shuffler.shuffle(); for (int i = 0; i < NUM_CARDS; i++) { cout << shuffler.dealCard() << " "; } cout << endl; return 0; } ``` In this code, the `ShufflingMachine` class represents the shuffling machine. The `deck` array stores the deck of cards, and the `position` variable keeps track of the current position in the deck. The `shuffle` method shuffles the deck by randomly swapping cards. It uses the `srand` function to seed the random number generator with the current time, and the `rand` function to generate random indices for swapping cards. The `dealCard` method deals the next card from the deck. If the deck has been exhausted, it calls the `shuffle` method to shuffle the cards again. In the `main` function, we create a `ShufflingMachine` object and shuffle the cards. Then we deal all the cards and print them out.
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