Hi,
I have a problem whose solution escapes me (i.e.after working through
various solutions for several days I have yet to hit upon an elegant
one (or even one that works for all cases)).
I have an array of string where each element contains the
comma-separated numbers of items that belong to a group (each element
is one group). I want to reduce the array so that each item appears
only once, where it is first encountered. Moreover, items that always
appear together should get their own group (array element).
Here is an example:
Array(0) = 1,4,6
(1) = 1,2
(2) = 8,7,9
(3) = 1,2
should become
(0) = 1
(1) = 4,6
(2) = 2
(3) = 8,7,9
Each item (number) now appears only once. And minimum groups are
maintained (such as, 4,6 is one group).
I'd welcome any suggestions.
Jon
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