42 lines
1.3 KiB
Markdown
42 lines
1.3 KiB
Markdown
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# Grains
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Write a program that calculates the number of grains of wheat on a chessboard given that the number on each square doubles.
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There once was a wise servant who saved the life of a prince. The king
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promised to pay whatever the servant could dream up. Knowing that the
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king loved chess, the servant told the king he would like to have grains
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of wheat. One grain on the first square of a chess board. Two grains on
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the next. Four on the third, and so on.
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There are 64 squares on a chessboard.
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Write a program that shows:
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- how many grains were on each square, and
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- the total number of grains
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## For bonus points
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Did you get the tests passing and the code clean? If you want to, these
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are some additional things you could try:
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- Optimize for speed.
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- Optimize for readability.
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Then please share your thoughts in a comment on the submission. Did this
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experiment make the code better? Worse? Did you learn anything from it?
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To run the tests simply run the command `go test` in the exercise directory.
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If the test suite contains benchmarks, you can run these with the `-bench`
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flag:
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go test -bench .
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For more detailed info about the Go track see the [help
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page](http://help.exercism.io/getting-started-with-go.html).
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## Source
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JavaRanch Cattle Drive, exercise 6 [view source](http://www.javaranch.com/grains.jsp)
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