38 lines
1.2 KiB
Text
38 lines
1.2 KiB
Text
;Definitions
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For the purposes of this task, an '''isogram''' means a string where each character present is used the same number of times and an '''n-isogram''' means an isogram where each character present is used exactly '''n''' times.
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A '''heterogram''' means a string in which no character occurs more than once. It follows that a '''heterogram''' is the same thing as a '''1-isogram'''.
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;Examples
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''caucasus'' is a '''2-isogram''' because the letters c, a, u and s all occur twice.
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''atmospheric'' is a '''heterogram''' because all its letters are used once only.
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;Task
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Using '''[http://wiki.puzzlers.org/pub/wordlists/unixdict.txt unixdict.txt]''' and ignoring capitalization:
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'''1)''' Find and display here all words which are '''n-isograms''' where '''n > 1'''.
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Present the results as a single list but sorted as follows:
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a. By decreasing order of '''n''';
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b. Then by decreasing order of word length;
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c. Then by ascending lexicographic order.
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<br><br>
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'''2)''' Secondly, find and display here all words which are '''heterograms''' and have more than '''10''' characters.
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Again present the results as a single list but sorted as per b. and c. above.
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;Reference
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* [[wp:Heterogram_(literature)|Wikipedia: Heterogram]]
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<br>
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{{Template:Strings}}
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<br>
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