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Rock-paper-scissors: Difference between revisions
→{{header|Java}}: Added fixes for expandability, added rules for RPScLSp in comments
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(→{{header|Java}}: Added fixes for expandability, added rules for RPScLSp in comments) |
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=={{header|Java}}==
{{works with|Java|1.5+}}
This could probably be made simpler, but some more complexity is necessary so that other items besides rock, paper, and scissors can be added (as school children and nerds like to do [setup for rock-paper-scissors-lizard-spock is in multi-line comments]). The method <code>getAIChoice()</code> borrows from [[#Ada|the Ada example]] in spirit, but is more generic to additional items.
<lang java5>import java.util.
import java.util.Collections;
import java.util.EnumMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
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public class RPS {
public enum Item{
ROCK, PAPER, SCISSORS
}
//EnumMap uses a simple array under the hood
public static Map<Item, List<Item>> beats = new EnumMap<Item, List<Item>>(Item.class){{
put(Item.ROCK, Arrays.asList(Item.SCISSORS/*, Item.LIZARD*/));
put(Item.PAPER, Arrays.asList(Item.ROCK/*, Item.SPOCK*/));
put(Item.SCISSORS, Arrays.asList(Item.PAPER/*, Item.LIZARD*/));
/*
put(Item.SPOCK, Arrays.asList(Item.ROCK, Item.SCISSORS));
put(Item.LIZARD, Arrays.asList(Item.SPOCK, Item.PAPER));
*/
}};
public static Map<Item, List<Item>> losesTo = new EnumMap<Item, List<Item>>(Item.class){{
put(Item.SCISSORS, Arrays.asList(Item.ROCK/*, Item.SPOCK*/));
put(Item.ROCK, Arrays.asList(Item.PAPER/*, Item.SPOCK*/));
put(Item.PAPER, Arrays.asList(Item.SCISSORS/*, Item.LIZARD*/));
/*
put(Item.SPOCK, Arrays.asList(Item.PAPER, Item.LIZARD));
put(Item.LIZARD, Arrays.asList(Item.SCISSORS, Item.ROCK));
*/
}};
public static Map<Item, Integer> counts = new EnumMap<Item, Integer>(Item.class){{
put(Item.ROCK, 1);
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put(Item.SCISSORS, 1);
//add other counts here for additional types
/*
put(Item.SPOCK, 1);
put(Item.LIZARD, 1);
*/
}};
private static int totalThrows = Item.values().length;
public static void main(String[] args){
Scanner in = new Scanner(System.in);
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if(aiChoice.equals(choice)){
System.out.println("Tie!");
}else if(beats.get(choice).
System.out.println("You chose...wisely. You win!");
}else{
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for(Item item:Item.values()){
if(rand < counts.get(item)){
return losesTo.get(item).get(0);
}
rand -= counts.get(item);
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