Determining winning amount in Poker without creating side-pots

Question

I\'m trying to run a poker simulation and have the following data about a poker table

• how much each player contributed to the pot
• a \"hand score\" (after

Answer 1

The following code has a very large number of assertions, but BE CAREFUL because I have not tested it carefully. It's not clear what to do with the odd chips; I give them to the players that appear later in the collection.

import java.util.*;

public class Player {
    int contributed, score, received;

    static void winnings(Collection players) {
        for (Player player : players) {
            assert player.contributed >= 0;
            player.received = 0;
        }
        int potCutoff = 0;
        while (true) {
            int playerCount = 0;
            int nextPotCutoff = Integer.MAX_VALUE;
            int scoreMax = Integer.MIN_VALUE;
            int winnerCount = 0;
            for (Player player : players) {
                if (player.contributed <= potCutoff) {
                    continue;
                }
                playerCount++;
                assert playerCount > 0;
                nextPotCutoff = Math.min(nextPotCutoff, player.contributed);
                if (player.score > scoreMax) {
                    scoreMax = player.score;
                    winnerCount = 1;
                } else if (player.score == scoreMax) {
                    winnerCount++;
                    assert winnerCount > 0;
                } else {
                    assert player.score < scoreMax;
                }
            }
            if (playerCount == 0) {
                break;
            }
            assert playerCount > 0;
            assert nextPotCutoff > potCutoff;
            assert potCutoff >= 0;
            assert Integer.MAX_VALUE / (nextPotCutoff - potCutoff) >= playerCount;
            int potTotal = playerCount * (nextPotCutoff - potCutoff);
            assert potTotal > 0;
            assert winnerCount > 0;
            assert winnerCount <= playerCount;
            for (Player player : players) {
                if (player.contributed <= potCutoff) {
                    continue;
                }
                assert player.contributed >= nextPotCutoff;
                if (player.score == scoreMax) {
                    assert winnerCount > 0;
                    int winnerShare = potTotal / winnerCount;
                    winnerCount--;
                    assert winnerShare > 0;
                    assert potTotal >= winnerShare;
                    potTotal -= winnerShare;
                    player.received += winnerShare;
                    assert player.received > 0;
                } else {
                    assert player.score < scoreMax;
                }
            }
            assert winnerCount == 0;
            assert potTotal == 0;
            potCutoff = nextPotCutoff;
        }
    }

    public static void main(String[] args) {
        Player p0 = new Player(), p1 = new Player(), p2 = new Player();
        p0.contributed = 100;
        p1.contributed = 80;
        p2.contributed = 20;
        p0.score = 10;
        p1.score = 2;
        p2.score = 10;
        Collection players = new ArrayList();
        players.add(p0);
        players.add(p1);
        players.add(p2);
        winnings(players);
        for (Player player : players) {
            System.out.println(player.received);
        }
    }
}