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Basic prisoner's dilemma?

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Hi there!

I was wondering if you were able to help with me a basic prisoner's
dilemma strategy? How would I implement a basic tit for tat strategy?
And perhaps try to avoid the "death spiral" from occurring when two
players use the tit for tat strategy?

See below

Thanks!

/*
* File: PDStrategy.java
* ---------------------
* This class encapsulates the strategy for an Iterated Prisoner's
* Dilemma game. To enter the contest, all you have to do is change
* the definition of chooseAction so that it takes account of the
* history and does something more clever than cooperating (or
* defecting) all the time.
*/

import java.util.*;

class PDStrategy {

/*
* Method: chooseAction
* --------------------
* This method determines the player's action for the current
* game, based on two ArrayLists containing the history of play:
* one for your algorithm and one for the opponent. Each of these
* ArrayLists contains strings, which are guaranteed to be one of
* the uppercase strings "COOPERATE" or "DEFECT". Your method
* should look at the history and return one of those two strings
* representing the action you take on the current round.
*/

public String chooseAction(ArrayList<String> myHistory,
ArrayList<String> oppHistory) {
return "COOPERATE"; //currently, it is only cooperating
}

}

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Basic prisoner's dilemma? theglazeb <theglazeb@gmail.com> - 2011-04-17 19:51 -0700
  Re: Basic prisoner's dilemma? Lew <noone@lewscanon.com> - 2011-04-17 23:15 -0400
    Re: Basic prisoner's dilemma? Esmond Pitt <esmond.pitt@bigpond.com> - 2011-04-18 13:54 +1000
      Re: Basic prisoner's dilemma? theglazeb <theglazeb@gmail.com> - 2011-04-17 22:08 -0700
        Re: Basic prisoner's dilemma? Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-04-17 23:47 -0700
        Re: Basic prisoner's dilemma? markspace <-@.> - 2011-04-18 00:14 -0700
  Re: Basic prisoner's dilemma? rossum <rossum48@coldmail.com> - 2011-04-18 13:01 +0100
  Re: Basic prisoner's dilemma? Bent C Dalager <bcd@pvv.ntnu.no> - 2011-04-18 13:38 +0000
  Re: Basic prisoner's dilemma? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-04-18 19:22 +0200
    Re: Basic prisoner's dilemma? Lew <noone@lewscanon.com> - 2011-04-18 13:34 -0400
      Re: Basic prisoner's dilemma? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-04-18 21:26 +0200
        Re: Basic prisoner's dilemma? Lew <noone@lewscanon.com> - 2011-04-18 16:33 -0400
          Re: Basic prisoner's dilemma? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-04-18 23:50 +0200
            Re: Basic prisoner's dilemma? Lew <noone@lewscanon.com> - 2011-04-18 18:37 -0400
              Re: Basic prisoner's dilemma? markspace <-@.> - 2011-04-18 15:51 -0700
    Re: Basic prisoner's dilemma? Michael Wojcik <mwojcik@newsguy.com> - 2011-04-19 16:14 -0400

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