Names to numbers: Difference between revisions
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This solution uses "Number names" from [[Number_names#Ruby | here]] |
This solution uses "Number names" from [[Number_names#Ruby | here]] |
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{{trans|Python}} |
{{trans|Python}} |
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<lang ruby>require ' |
<lang ruby>require 'number_names' |
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def int_from_words(num) |
def int_from_words(num) |
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words = num.downcase.gsub(/(,| and |-)/,' ').split |
words = num.downcase.gsub(/(,| and |-)/,' ').split |
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if words[0] =~ /(minus|negative)/ |
if words[0] =~ /(minus|negative)/ |
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negmult = -1 |
negmult = -1 |
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words.shift |
words.shift |
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end |
end |
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negmult * (total + small) |
negmult * (total + small) |
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end |
end</lang> |
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Examples: |
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# examples |
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for n in (-10000..10000).step(17) |
<lang ruby>for n in (-10000..10000).step(17) |
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raise unless n == int_from_words(wordify(n)) |
raise unless n == int_from_words(wordify(n)) |
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end |
end |
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{{out}} |
{{out}} |
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<pre> |
<pre> |
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## |
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## These tests show <==> for a successful round trip, otherwise <??> |
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## |
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+0 <==> zero |
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-3 <==> negative three |
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+5 <==> five |
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-7 <==> negative seven |
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+11 <==> eleven |
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-13 <==> negative thirteen |
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+17 <==> seventeen |
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-19 <==> negative nineteen |
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+23 <==> twenty-three |
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-29 <==> negative twenty-nine |
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201021002001 <==> two hundred and one billion, twenty-one million, two thousand, one |
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-20102100201 <==> negative twenty billion, one hundred and two million, one hundred thousand, two hundred and one |
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2010210020 <==> two billion, ten million, two hundred and ten thousand, twenty |
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-201021002 <==> negative two hundred and one million, twenty-one thousand, two |
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20102100 <==> twenty million, one hundred and two thousand, one hundred |
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-2010210 <==> negative two million, ten thousand, two hundred and ten |
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201021 <==> two hundred and one thousand, twenty-one |
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-20103 <==> negative twenty thousand, one hundred and three |
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2010 <==> two thousand, ten |
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-201 <==> negative two hundred and one |
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20 <==> twenty |
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-2 <==> negative two |
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0 <==> zero |
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</pre> |
</pre> |
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