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Decimal to Hexadecimal Terminal Script

/ Published in: Ruby
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  1. def decimal_to_hex(x)
  2.   x = x.to_i
  3.   q = 1
  4.   r = []
  5.   while q > 0 
  6.     q = x / 16
  7.     r << x % 16
  8.     x = q
  9.   end
  10.   i = 0
  11.   r.each do |n|
  12.     r[i] = case n
  13.     when 10
  14.       then r[i] = 'A'
  15.     when 11
  16.       then r[i] = 'B'
  17.     when 12
  18.       then r[i] = 'C'
  19.     when 13
  20.       then r[i] = 'D'
  21.     when 14
  22.       then r[i] = 'E'
  23.     when 15
  24.       then r[i] = 'F'
  25.     else
  26.       n = n
  27.     end
  28.     i += 1
  29.   end
  30.   r.reverse.join
  31. end
  32.  
  33. number = gets.chomp
  34. p decimal_to_hex(number)

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