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I need help (palindrome vector)

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Cristian
Cristian 2013-5-15
Hello. So I have a vector x=[1 2 3 4 5 6]. I want to create another vector that contains the values of x in that order, followed by the same values in descending order. By using the fliplr function, I obtained this vector y=[x fliplr(x)] -> y=[1 2 3 4 5 6 6 5 4 3 2 1]. The problem is the middle number that repeat itself. I want something like this: y=[1 2 3 4 5 6 5 4 3 2 1]. Can you guys help me?

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回答（2 个）

Matt Kindig
Matt Kindig 2013-5-15
y = x([1:end, end-1:-1:1])
Image Analyst
Image Analyst 2013-5-15
Simply don't append the first element of the flipped vector.
flipped = fliplr(x);
y = [x, flipped(2:end)]

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