Union, Intersection Difference, Symmetric Difference

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Can someone please give me a code of this set theory? Using for statements and if-else statements. thank you in advance to the man or woman who will give me an answer.

Posted 1-Sep-11 0:42am

Member 8204896

Updated 1-Sep-11 0:53am

Maximilien

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LittleYellowBird 1-Sep-11 6:46am

This looks rather like homework and if so you would learn far more if you researched it yourself. Also, for your information, not everyone here is a man!

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Maximilien · Answer 1 · 2011-09-01T01:03:00

I assume you know/understand what each set operation does (they are not difficult concepts).

(just talking about technicality)
What kind of data structure are you using ? arrays ? STL collections ?

~~If you are using STL, there are operations already defined for those (for example set_symmetric_difference )~~.

ok, you are not using STL (or don't want to).

First, If I give you two bags of numbered balls ( like lottery balls ), can you simulate on paper how to do the different set operations ?

In code, for example, the union, the simplest operation is just adding the two sets, so, you will need to have 1 or 2 for loops to loop the 2 arrays to copy the elements from the arrays into a 3rd one (the result); if you need to have only unique items in the resulting set, then you will have a couple of if conditions to check if the item is already in the resulting array.

This should get you started.

Good luck ...

Max.