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追記

2018/04/27 10:01

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episteme

スコア16614

test CHANGED Viewed

@@ -113,3 +113,147 @@
 */
 ```
+[追記] こっちの方がイケてるかな。
+```C++
+#include <iostream>  // cout, endl
+#include <string>    // string
+#include <vector>    // vector
+#include <algorithm> // sort
+#include <numeric>   // iota
+#include <random>    // mt19937, random_device
+#include <utility>   // pair, make_pair
+#include <cassert>   // assert
+class card {
+private:
+  int id_;
+  explicit card(int id) : id_(id) {
+    assert( id >= 0 && id < 52 );
+  }
+public:
+  card() = delete;
+  int suit() const { return id_ % 4; }
+  int rank() const { return id_ / 4; }
+  std::string suit_str() const { return std::string(1,"CDHS"[suit()]); }
+  std::string rank_str() const { return std::string(1,"A23456789TJQK"[rank()]); }
+  std::string str() const { return suit_str() + rank_str(); }
+  static card make(int id) { return card(id); }
+};
+inline bool operator<(const card& a, const card& b) {
+  return std::make_pair(a.rank(),a.suit()) < std::make_pair(b.rank(),b.suit());
+}
+inline std::ostream& operator<<(std::ostream& stream, const card& c) {
+  return stream << c.str();
+}
+int main() {
+  using namespace std;
+  // N人のplayer
+  const int N = 5;
+  vector<vector<card>> players(N);
+  // 52枚のcardからなるdeck
+  vector<card> deck;
+  for ( int id = 0; id < 52; ++id ) {
+    deck.emplace_back(card::make(id));
+  }
+  // deckをシャッフル
+  shuffle(deck.begin(), deck.end(), mt19937(random_device()()));
+  // deckが空になるまで、cardを各playerに配る
+  for ( int c = 0; !deck.empty(); ++c %= N ) {
+    players[c].emplace_back(deck.back());
+    deck.pop_back();
+  }
+  // 各playerに対し
+  for ( vector<card>& hand : players ) {
+    // 手札を(ソートして)公開
+    cout << hand.size() << " cards: ";
+    sort(hand.begin(), hand.end());
+    for ( const card& c : hand ) {
+      cout << c << ' ';
+    }
+    cout << endl;
+  }
+}
+```