Elasticsearch shards matrix

elasticsearch_shards_matrix.rb

m = []

size = 15

def shards(s, r)
  s * r + s
end

size.times { |y| m << Array(0..size).map { |x| shards(y, x) }.join(' | ') }

print '|   '
size.times { |header| print "| #{header} " }
puts '|'

size.times { |header| print "| - " }
puts '| - |'

m.each_with_index do |row, index|
  next if index == 0
  print "| #{index} | #{row} |"
  puts
end