设计一个Desk 类用于表示一副52 张的扑克牌，公共接口包含用于洗牌、发牌、显示牌

局中各方所拿的牌、比较牌的大小(如Q比J大)等成员函数，要模拟洗牌，可以用rand这样

的库函数。-Design a Desk class is used to represent a 52 playing cards, a common interface contains reshuffle, licensing, signs

Bureau parties take cards, compare card size (such as Q ratio J large) and other member functions, to simulate shuffling, so you can use rand

The library functions.