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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?

## Setup

There are two different methods of getting set up to run the tests with Objective-C:

- Create an Xcode project with a test target which will run the tests.
- Use the ruby gem `objc` as a test runner utility.

Both are described in more detail here: http://exercism.io/languages/objective-c

### Submitting Exercises

When submitting an exercise, make sure your solution file is in the same directory as the test code.

The submit command will look something like:

```shell
exercism submit <path-to-exercism-workspace>/objective-c/grains/Grains.m
```

You can find the Exercism workspace by running `exercism debug` and looking for the line beginning
with Workspace.

## 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

75 entries across 75 versions & 1 rubygems

Version Path
trackler-2.2.1.119 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.118 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.117 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.116 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.115 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.114 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.113 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.111 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.110 tracks/objective-c/exercises/grains/README.md
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trackler-2.2.1.108 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.107 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.106 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.105 tracks/objective-c/exercises/grains/README.md
trackler-2.2.1.104 tracks/objective-c/exercises/grains/README.md