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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.
If you find that `testWorksWithGermanLetters` fails even though you think you've implemented it correctly,
this could be because of the [JVM encoding](https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_61/rzaha/international.htm).
Try setting the `JAVA_TOOL_OPTIONS` environment variable to `-Dfile.encoding=UTF8` to fix this.
- To set an environment variable on Windows:
1. Go to Computer -> Properties -> Advanced System Settings
2. Add a new environment variable
- [To set an environment variable on a mac](http://blog.lidalia.org.uk/2011/04/setting-default-java-file-encoding-to.html)
- [To set an environment variable on linux](https://unix.stackexchange.com/questions/151733/where-can-i-set-global-java-options)
To run the tests:
```sh
$ gradle test
```
For more detailed info about the Java track see the [help page](http://exercism.io/languages/java).
## 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.
Version data entries
51 entries across 51 versions & 1 rubygems