Re: Find common elements in a list of sublists
- To: mathgroup at smc.vnet.net
- Subject: [mg125829] Re: Find common elements in a list of sublists
- From: Alexei Boulbitch <Alexei.Boulbitch at iee.lu>
- Date: Wed, 4 Apr 2012 04:31:25 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
Suppose I have a list of sublists:
d={{1, 19}, {1, 23}, {1, 5, 25}, {1, 17}, {1, 11}, {1, 5}}
How do I find the elements common to all the sublists?
I can do it using intersection:
Intersection[dx[[1]], dx[[2]], dx[[3]], dx[[4]], dx[[5]], dx[[6]]]
which yields, correctly, {1}, but what if the number of sublists in d is variable?
Try this:
d={{1,19},{1,23},{1,5,25},{1,17},{1,11},{1,5}};
Intersection@@d
{1}
Alexei BOULBITCH, Dr., habil.
IEE S.A.
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