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Contents
# Isogram
Determine if a word or phrase is an isogram.
An isogram (also known as a "nonpattern word") is a word or phrase without a repeating letter.
Examples of isograms:
- lumberjacks
- background
- downstream
The word *isograms*, however, is not an isogram, because the s repeats.
## Making the Test Suite Pass
1. Get [PHPUnit].
% wget --no-check-certificate https://phar.phpunit.de/phpunit.phar
% chmod +x phpunit.phar
2. Execute the tests for an assignment.
% phpunit.phar wordy/wordy_test.php
[PHPUnit]: http://phpunit.de
## Source
Wikipedia [https://en.wikipedia.org/wiki/Isogram](https://en.wikipedia.org/wiki/Isogram)
## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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107 entries across 107 versions & 1 rubygems