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# 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? ## Running the tests To run the tests, run the command `busted` from within the exercise directory. ## Further information For more detailed information about the Lua track, including how to get help if you're having trouble, please visit the exercism.io [Lua language page](http://exercism.io/languages/lua/about). ## 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.
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63 entries across 63 versions & 1 rubygems