Module: Alphabetics

Included in:
NumberTo
Defined in:
lib/modules/alphabetics.rb

Constant Summary collapse

ALPH = 
("a" .. "z").to_a

Instance Method Summary collapse

Instance Method Details

#calc_repetition(num) ⇒ Object 



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# File 'lib/modules/alphabetics.rb', line 20

def calc_repetition(num)
  num % 26 == 0 ? num / 26 : (num / 26) + 1
end

#num_to_alph(num) ⇒ Object 



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# File 'lib/modules/alphabetics.rb', line 12

def num_to_alph(num)
  num = num.to_i
  repetition = num > 26 ? calc_repetition(num) : 1
  real_num = num > 26 ? num % 26 : num
  real_num = 26 if real_num == 0
  ALPH[real_num - 1] * repetition
end

#to_lower_alpha(num) ⇒ Object 



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# File 'lib/modules/alphabetics.rb', line 6

def to_lower_alpha(num)
  num_to_alph(num)
end

#to_upper_alpha(num) ⇒ Object 



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# File 'lib/modules/alphabetics.rb', line 2

def to_upper_alpha(num)
  to_lower_alpha(num).upcase
end