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deltatux

Tue Dec 02, 2008 9:50 pm


Parallel Array Matching

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Hey guys,

Recently I had my test, but this question completely stumped me. I was wondering how you guys would approach this question:

So basically I get two parallel arrays as such:

userid_t[] 1001, 1002, 1003, 1001, 1001, 1002, 1004, 1005
itemcode_t[] A , A , B , B , C , A , B , F

So basically, I have to go through the parallel arrays and see the frequency of them having two distinct users selecting the item code.

So in that question, the array:

itemcodes[] A, B, C, F