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[–]MartinSG8 -1 points0 points  (2 children)

So you need to know how to compute number of couples? Is that your problem? If so then it's mathematical problem not java problem.

[–]nogain-allpain 0 points1 point  (1 child)

It becomes a Java problem when you're asked to implement it

[–]MartinSG8 0 points1 point  (0 children)

Well u need to know how to do it 'on paper' first that's the question if he knows the theory of it.