Unordered combinations
I know how to generate ordered combinations, but how do I generate unordered combinations (please tell me the fastest way because I can only think of slow ways to do it)...
(The order does not matter for example:
if ABCD shows up, ADCB should not show up.
I would like it done with loops since I am going to take the information from arrays.
(The order does not matter for example:
if ABCD shows up, ADCB should not show up.
I would like it done with loops since I am going to take the information from arrays.
Are the ordered combinations unique? Can you have "ABCBD" and, if so, then "ABCD" also?
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