轉:模擬洗牌(撲克)程式
// Illustrates : Shuffle algorithm, srand, rand.
// Improvements: Use classes for Card and Deck.
// Author : Fred Swartz 2003-08-24, shuffle correction 2007-01-18
// Placed in the public domain.
#include <iostream>
#include <cstdlib> // for srand and rand
#include <ctime> // for time
using namespace std;
int main() {
int card[52]; // array of cards;
int n; // number of cards to deal
srand(time(0)); // initialize seed "randomly"
for (int i=0; i<52; i++) {
card[i] = i; // fill the array in order
}
while (cin >> n) {
//--- Shuffle elements by randomly exchanging each with one other.
for (int i=0; i<(52-1); i++) {
int r = i + (rand() % (52-i)); // Random remaining position.
int temp = card[i]; card[i] = card[r]; card[r] = temp;
}
//--- Print first n cards as ints.
for (int c=0; c<n; c++) {
cout << card[c] << " "; // Just print number
}
cout << endl;
}
return 0;
}
posted on 2012-12-26 15:59 胡滿超 閱讀(356) 評論(0) 編輯 收藏 引用 所屬分類: 演算法 、轉載