Replace elements of array with elements of another array without for loop

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Harshil Deepak Prajapati
评论： Guillaume 2018-3-28
A = [1 1 1 3 3 3 4 8 8 10 10 15 15]
B = unique(A)
B = [1 3 4 8 10 15]
I want the output to be [1 1 1 2 2 2 3 4 4 5 5 6 6]
I tried for loop :
for i=1:length(A)
A(A == B(i)) = i;
end
How can I do it without for loop?

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采纳的回答

Birdman
Birdman 2018-3-28
编辑：Birdman 2018-3-28
[B,ia,ic] = unique(A)
Third output argument ic will give you what you want.

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