I have few arrays with some common elements. I like to get minimum 'X' items from each array such that they represent maximum mutually exclusive elements if possible, to show the uniqness of the array. The top 'X' elements should be in the order of insertion if possible. All these arrays will have atleast one common element, which should be there in the results. My idea is to have 'elements' that I can use 'identity' or original array.

So 

If
$a = [1,2,3,4,5,6]
$b = [3,4,5,7,8]
$c = [3,6,8,9]

and

X = 3

then

$a_ = [1,2,3]
$b_ = [3,7,8]
$c_ = [3,6,9]

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What is the good algorithm or modules I should use for the same ?
Thanks

In reply to Mutually Exclusive Elements by Anonymous Monk

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