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48 lines
1.3 KiB
48 lines
1.3 KiB
3 years ago
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# Grains
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Welcome to Grains on Exercism's Racket Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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## Instructions
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Calculate the number of grains of wheat on a chessboard given that the number
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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, with the number
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of grains doubling on each successive square.
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There are 64 squares on a chessboard (where square 1 has one grain, square 2 has two grains, and so on).
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Write code that shows:
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- how many grains were on a given square, and
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- the total number of grains on the chessboard
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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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## Source
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### Created by
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- @arguello
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### Contributed to by
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- @mbertheau
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- @PurityControl
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- @yurrriq
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### Based on
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JavaRanch Cattle Drive, exercise 6 - http://www.javaranch.com/grains.jsp
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