Contents

# Grains

Calculate the number of grains of wheat on a chessboard given that the number
on each square doubles.

There once was a wise servant who saved the life of a prince. The king
promised to pay whatever the servant could dream up. Knowing that the
king loved chess, the servant told the king he would like to have grains
of wheat. One grain on the first square of a chess board. Two grains on
the next. Four on the third, and so on.

There are 64 squares on a chessboard.

Write code that shows:
- how many grains were on each square, and
- the total number of grains

## For bonus points

Did you get the tests passing and the code clean? If you want to, these
are some additional things you could try:

- Optimize for speed.
- Optimize for readability.

Then please share your thoughts in a comment on the submission. Did this
experiment make the code better? Worse? Did you learn anything from it?


Run the tests with:

```bash
bats grains_test.sh
```

After the first test(s) pass, continue by commenting out or removing the `skip` annotations prepending other tests.

## Source

JavaRanch Cattle Drive, exercise 6 [http://www.javaranch.com/grains.jsp](http://www.javaranch.com/grains.jsp)

## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.

Version data entries

92 entries across 92 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/bash/exercises/grains/README.md
trackler-2.2.1.179	tracks/bash/exercises/grains/README.md
trackler-2.2.1.178	tracks/bash/exercises/grains/README.md
trackler-2.2.1.177	tracks/bash/exercises/grains/README.md
trackler-2.2.1.176	tracks/bash/exercises/grains/README.md
trackler-2.2.1.175	tracks/bash/exercises/grains/README.md
trackler-2.2.1.174	tracks/bash/exercises/grains/README.md
trackler-2.2.1.173	tracks/bash/exercises/grains/README.md
trackler-2.2.1.172	tracks/bash/exercises/grains/README.md
trackler-2.2.1.171	tracks/bash/exercises/grains/README.md
trackler-2.2.1.170	tracks/bash/exercises/grains/README.md
trackler-2.2.1.169	tracks/bash/exercises/grains/README.md
trackler-2.2.1.167	tracks/bash/exercises/grains/README.md
trackler-2.2.1.166	tracks/bash/exercises/grains/README.md
trackler-2.2.1.165	tracks/bash/exercises/grains/README.md
trackler-2.2.1.164	tracks/bash/exercises/grains/README.md
trackler-2.2.1.163	tracks/bash/exercises/grains/README.md
trackler-2.2.1.162	tracks/bash/exercises/grains/README.md
trackler-2.2.1.161	tracks/bash/exercises/grains/README.md
trackler-2.2.1.160	tracks/bash/exercises/grains/README.md