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Write a simulation program manual shuffle, the cards were sent to wash a good four. Card use to describe the structure of a card, with the random function to simulate the manual process of shuffling, and finally wash the good order of 52 cards were issued to four people. Cards for each person according to the rules of bridge output. That is, a person' s license have to press the card suit (in order of clubs, diamonds, hearts and spades) classification, the same type of licenses to press A, K, Q, J, ..., 3,2 card the size of the order. The other four licensing the order should be distributed.