47 lines
1.2 KiB
Java
47 lines
1.2 KiB
Java
// enums/RoShamBo6.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// Enums using "tables" instead of multiple dispatch
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// {main: enums.RoShamBo6}
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package enums;
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import static enums.Outcome.*;
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enum RoShamBo6 implements Competitor<RoShamBo6> {
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PAPER, SCISSORS, ROCK;
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private static Outcome[][] table = {
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{ DRAW, LOSE, WIN }, // PAPER
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{ WIN, DRAW, LOSE }, // SCISSORS
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{ LOSE, WIN, DRAW }, // ROCK
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};
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@Override
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public Outcome compete(RoShamBo6 other) {
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return table[this.ordinal()][other.ordinal()];
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}
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public static void main(String[] args) {
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RoShamBo.play(RoShamBo6.class, 20);
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}
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}
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/* Output:
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ROCK vs. ROCK: DRAW
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SCISSORS vs. ROCK: LOSE
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SCISSORS vs. ROCK: LOSE
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SCISSORS vs. ROCK: LOSE
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PAPER vs. SCISSORS: LOSE
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PAPER vs. PAPER: DRAW
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PAPER vs. SCISSORS: LOSE
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ROCK vs. SCISSORS: WIN
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SCISSORS vs. SCISSORS: DRAW
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ROCK vs. SCISSORS: WIN
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SCISSORS vs. PAPER: WIN
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SCISSORS vs. PAPER: WIN
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ROCK vs. PAPER: LOSE
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ROCK vs. SCISSORS: WIN
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SCISSORS vs. ROCK: LOSE
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PAPER vs. SCISSORS: LOSE
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SCISSORS vs. PAPER: WIN
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SCISSORS vs. PAPER: WIN
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SCISSORS vs. PAPER: WIN
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SCISSORS vs. PAPER: WIN
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*/
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