Remove duplicates from array for landmark sequence generation

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Isuru
Isuru 2014-6-2
评论： Henric Rydén 2014-6-2
Hi,
Say I had an array:
x
I have 6 landmarks and I want to generate different path ways so I travel each landmarks once;
For example;
I want x to look like;
x = [1 2 3 4 5 6] or x = [1 3 2 5 4 6] or x = [1 5 4 2 3 6] without any repetition of landmarks.
However 1 is the starting landmark and 6 is the end landmark. I want these to stay as it is. The landmarks between are generated using randperm(6). How do generate an array like this?
Thanks

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回答（1 个）

Henric Rydén
Henric Rydén 2014-6-2
perms(x(2:end-1))
gives you all paths. Add ones and sixes with
[repmat(1,factorial(4),1) perms(x(2:end-1)) repmat(6,factorial(4),1)]
  2 个评论
Isuru
Isuru 2014-6-2
Thanks for the reply. This still gives me repeated landmark values. So I only want to visit each landmark once from start to end and can't visit one place twice. Is there another way around this?
Henric Rydén
Henric Rydén 2014-6-2
What do you mean by "repeated landmark values"? All rows in the output contains 1-6 and are never repeated.

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