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# File 'lib/to_cardinal.rb', line 6
def to_cardinal
case self.downcase
when 'first', '1st'
1
when 'second', '2nd'
2
when 'third', '3rd'
3
when 'fourth', '4th'
4
when 'fifth', '5th'
5
when 'sixth', '6th'
6
when 'seventh', '7th'
7
when 'eighth', '8th'
8
when 'ninth', '9th'
9
when 'tenth', '10th'
10
when 'eleventh', '11th'
11
when 'twelfth', '12th'
12
when 'thirteenth', '13th'
13
when 'fourteenth', '14th'
14
when 'fifteenth', '15th'
15
when 'sixteenth', '16th'
16
when 'seventeenth', '17th'
17
when 'eighteenth', '18th'
18
when 'nineteenth', '19th'
19
when 'twentieth', '20th'
20
when 'thirtieth', '30th'
30
when 'fortieth', '40th'
40
when 'fiftieth', '50th'
50
when 'sixtieth', '60th'
60
when 'seventieth', '70th'
70
when 'eightieth', '80th'
80
when 'ninetieth', '90th'
90
when 'hundredth', '100th'
100
else
-1
end
end
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