Java收集算法：交易卡
Java收集算法：交易卡
实例源码：
源代码：
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import java.util.*;3
// 来 自 n o w j a v a . c o m4
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public class Deal {6
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public static void main(String[] args) {8
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if (args.length < 2) {10
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System.out.println("Usage: Deal hands cards");12
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return;14
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}16
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int numHands = Integer.parseInt(args[0]);18
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int cardsPerHand = Integer.parseInt(args[1]);20
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// Make a normal 52-card deck.23
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String[] suit = new String[] { "spades", "hearts", "diamonds",25
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"clubs" };27
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String[] rank = new String[] { "ace", "2", "3", "4", "5", "6", "7",29
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"8", "9", "10", "jack", "queen", "king" };31
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List<String> deck = new ArrayList<String>();33
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for (int i = 0; i < suit.length; i++)35
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for (int j = 0; j < rank.length; j++)37
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deck.add(rank[j] + " of " + suit[i]);39
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// Shuffle the deck.//N o w J a v a . c o m - 时代Java 提供42
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Collections.shuffle(deck);44
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if (numHands * cardsPerHand > deck.size()) {47
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System.out.println("Not enough cards.");49
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return;51
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}53
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for (int i = 0; i < numHands; i++)56
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System.out.println(dealHand(deck, cardsPerHand));58
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}60
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public static <E> List<E> dealHand(List<E> deck, int n) {63
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int deckSize = deck.size();65
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List<E> handView = deck.subList(deckSize - n, deckSize);67
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List<E> hand = new ArrayList<E>(handView);69
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handView.clear();71
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return hand;73
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}75
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}77
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/*80
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* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.82
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*84
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* Redistribution and use in source and binary forms, with or without86
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* modification, are permitted provided that the following conditions88
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* are met:90
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*92
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* - Redistributions of source code must retain the above copyright94
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* notice, this list of conditions and the following disclaimer.96
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*98
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* - Redistributions in binary form must reproduce the above copyright100
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* notice, this list of conditions and the following disclaimer in the102
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* documentation and/or other materials provided with the distribution.104
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*106
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* - Neither the name of Oracle or the names of its108
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* contributors may be used to endorse or promote products derived110
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* from this software without specific prior written permission.112
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*114
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS116
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,118
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR120
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR122
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