roshambo5.java

think in java 最新版本的源码

//: enumerated/RoShamBo5.java
// Multiple dispatching using an EnumMap of EnumMaps.
package enumerated;
import java.util.*;
import static enumerated.Outcome.*;

enum RoShamBo5 implements Competitor<RoShamBo5> {
  PAPER, SCISSORS, ROCK;
  static EnumMap<RoShamBo5,EnumMap<RoShamBo5,Outcome>>
    table = new EnumMap<RoShamBo5,
      EnumMap<RoShamBo5,Outcome>>(RoShamBo5.class);
  static {
    for(RoShamBo5 it : RoShamBo5.values())
      table.put(it,
        new EnumMap<RoShamBo5,Outcome>(RoShamBo5.class));
    initRow(PAPER, DRAW, LOSE, WIN);
    initRow(SCISSORS, WIN, DRAW, LOSE);
    initRow(ROCK, LOSE, WIN, DRAW);
  }	
  static void initRow(RoShamBo5 it,
    Outcome vPAPER, Outcome vSCISSORS, Outcome vROCK) {
    EnumMap<RoShamBo5,Outcome> row =
      RoShamBo5.table.get(it);
    row.put(RoShamBo5.PAPER, vPAPER);
    row.put(RoShamBo5.SCISSORS, vSCISSORS);
    row.put(RoShamBo5.ROCK, vROCK);
  }
  public Outcome compete(RoShamBo5 it) {
    return table.get(this).get(it);
  }
  public static void main(String[] args) {
    RoShamBo.play(RoShamBo5.class, 20);
  }
} /* Same output as RoShamBo2.java *///:~