57 lines
1.4 KiB
Java
57 lines
1.4 KiB
Java
// enums/RoShamBo4.java
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// ©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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package enums;
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public enum RoShamBo4 implements Competitor<RoShamBo4> {
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ROCK {
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@Override
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public Outcome compete(RoShamBo4 opponent) {
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return compete(SCISSORS, opponent);
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}
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},
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SCISSORS {
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@Override
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public Outcome compete(RoShamBo4 opponent) {
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return compete(PAPER, opponent);
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}
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},
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PAPER {
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@Override
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public Outcome compete(RoShamBo4 opponent) {
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return compete(ROCK, opponent);
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}
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};
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Outcome compete(RoShamBo4 loser, RoShamBo4 opponent) {
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return ((opponent == this) ? Outcome.DRAW
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: ((opponent == loser) ? Outcome.WIN
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: Outcome.LOSE));
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}
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public static void main(String[] args) {
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RoShamBo.play(RoShamBo4.class, 20);
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}
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}
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/* Output:
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PAPER vs. PAPER: DRAW
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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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ROCK vs. SCISSORS: WIN
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ROCK vs. ROCK: DRAW
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ROCK vs. SCISSORS: WIN
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PAPER vs. SCISSORS: LOSE
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SCISSORS vs. SCISSORS: DRAW
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PAPER vs. SCISSORS: LOSE
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SCISSORS vs. ROCK: LOSE
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SCISSORS vs. ROCK: LOSE
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PAPER vs. ROCK: WIN
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PAPER vs. SCISSORS: LOSE
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SCISSORS vs. PAPER: WIN
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ROCK vs. SCISSORS: WIN
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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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SCISSORS vs. ROCK: LOSE
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*/
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