33 lines
654 B
Markdown
33 lines
654 B
Markdown
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# Isogram
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Welcome to Isogram on Exercism's Dart Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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## Instructions
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Determine if a word or phrase is an isogram.
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An isogram (also known as a "non-pattern word") is a word or phrase without a repeating letter, however spaces and hyphens are allowed to appear multiple times.
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Examples of isograms:
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- lumberjacks
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- background
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- downstream
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- six-year-old
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The word *isograms*, however, is not an isogram, because the s repeats.
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## Source
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### Created by
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- @jvarness
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### Contributed to by
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- @kytrinyx
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### Based on
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Wikipedia - https://en.wikipedia.org/wiki/Isogram
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