balance.rb

# Copyright 2010 Jonathan Dahan <jedahan@gmail.com>
# Distributed under the terms of the ISC license ( http://en.wikipedia.org/wiki/ISC_license )

require 'csv'
require 'pp'
 
# Dumb team class
class Team
  attr_accessor :players, :score
  def initialize( players = [], score = 0.00 )
    @players = players
    @score = score
  end
end

# Read in k/d statistics, sort by score
scores = Hash.new
CSV.open('stats.txt').each do |row|
  scores[row[0].to_f] = row[1].chop
end
scores = Hash[*scores.sort.reverse.flatten]

# As per PUGs / Captains games, picks are 1 2 2 1 2 1 2 ...
teams = Array.new

# Seed first three players
teams << Team.new([scores.values[0]], scores.keys[0])
teams << Team.new(scores.values[1..2], scores.keys[1] + scores.keys[2])
3.times do scores.shift end

# Alternate remaining players
scores.each_with_index do |k,i|
  teams[i%2].score = teams[i%2].score + k[0]
  teams[i%2].players  <<  k[1]
end

# Convert raw score to k/d
teams[0].score = teams[0].score / teams[0].players.size
teams[1].score = teams[1].score / teams[1].players.size

pp teams

stats.txt

0.43,<BAD>Kuuki 
3.15,<RAD>Keller 
2.30,SnOwY 
2.21,neverdie 
2.51,pyro 
0.55,<BAD>SAINT 
2.00,DUO 
1.61,abse 
0.76,foolish 
1.83,NSAKENMAN 
0.50,tommorow 
0.92,whitecloud 
0.83,adams 
0.38,hamstergorge 
0.31,cooltwig 
0.65,tototem 
0.82,rockypatel 
0.77,imoscar 
2.73,whereareyouchristmas 
1.27,shooter