Any way to get the set of all pairs of pairs in Java?

Question

Let's say I have a set with the following values: A, B, C, D. Is there an easy way to get a set containing AB, AC, AD, BC, BD, CD?

In Ruby, I can do this directly with the combination function . Any suggestions on how to do this in Java?

+2

Brad beattie 27 oct. '09 at 5:26

1 answer

Jim ferrans · Answer 1 · 2009-10-27T05:49:19+0000

It is not built into the language or standard libraries, so you will need to link something like this in this example .