# Subset of Cubes

Donald R. Cossitt

buckaroo

Ranch Hand

Ranch Hand

Posts: 401

posted 7 years ago

I was pm'd about this this morning. While I have not been involved in the cattle drive for some time now, I have become intrigued with this assignment and have a question about what is expected in the nit picking. The expected results in any order is { 0, 3, 75, 54, 375, 540 }, but if

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Write an algorithm, using pseudo code, to perform one of the following tasks, and post it to the class folder by day 4. Then, choose one algorithm that was created and posted by another student to solve the same problem, and analyze the differences between the effectiveness of the two algorithms. Post the result of the analysis, and improvements to your algorithm by day 6 of the seminar. Be creative, and have fun!

Given a string of numbers, identify all of the substrings that form numbers that are divisible by 3. For example, applying the algorithm on the string 37540 should produce the following substrings (not necessarily in this order): 0; 3; 75; 54; 375; 540

I was pm'd about this this morning. While I have not been involved in the cattle drive for some time now, I have become intrigued with this assignment and have a question about what is expected in the nit picking. The expected results in any order is { 0, 3, 75, 54, 375, 540 }, but if

is the goal then what about 30, 45, 57, 453, etc? Or is it not 'any combonation' given the set { 3, 7, 5, 4, 0 }?identify all of the substrings that form numbers that are divisible by 3

doco

Katrina Owen

Sheriff

Posts: 1367

18

Marilyn de Queiroz

Sheriff

Posts: 9059

12

posted 7 years ago

I would say that the numbers need to be next to each other. Since it sounds to me like you are limited to one substring, you can't leave numbers out of the middle of "37540" to get "30". The only way to do that would be to concatenate two substrings. "3" + "0".

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*Given a string of numbers, identify all of the substrings that form numbers that are divisible by 3. For example, applying the algorithm on the string 37540 should produce the following substrings (not necessarily in this order): 0; 3; 75; 54; 375; 540*

... what about 30, 45, 57, 453, etc? Or is it not 'any combination' given the set { 3, 7, 5, 4, 0 }?

... what about 30, 45, 57, 453, etc? Or is it not 'any combination' given the set { 3, 7, 5, 4, 0 }?

I would say that the numbers need to be next to each other. Since it sounds to me like you are limited to one substring, you can't leave numbers out of the middle of "37540" to get "30". The only way to do that would be to concatenate two substrings. "3" + "0".

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