calculate excel cohort diagonals fields in ruby by dapulse

gistfile1.txt

x = ['c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z']
y = [11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34]
length = y.length
strings = []

for index in 0..length 
  substring = "="
  for i in 0..(index)
    substring = substring + "+" if substring != "="
    substring << "#{x[i]}#{y[index-i]}"
  end
  strings << substring
end
strings.each{|s| puts s }

it's always horrible to make diagonal field fetching in excel for cohorts, manual and annoying, this scripts creates the formulas, just copy & paste each field - still annoying but much less.