Your definition is incomplete, you must assign priorities.

For instance, you want each group to have the same number of items and you only want max 6 groups. If you only have 1 group containing all items, that would satisfy the requirements, but you probably don't want that :-)

You also don't specify if you want to allow the same number to be in more than one group, though it looks like you don't, from your example.

Update: you also in other words: you don't specify how you want to score the returned groups. For instance, why don't you prefer (pseudocode): 

[ 
 [1 1 1 2 3],
 [4 4 4 5 5],
 [6 6 6 7 7],
 [8 8 8]
]

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In reply to Re: How to Group List Items? by Joost
in thread How to Group List Items? by Thelonious

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