Finding the indices of the elements of one array in another

Given two vectors A and B,

I want to find the index of elements of B in A

I tried

A = ["G1", "V2", "G3", "G4", "V1"]
B = ["V1", "G4"];
[sharedvals,idxs] = intersect(A, B, 'stable')

The above returns

idxs =

4
5

Expected result:

idxs =

5
4

Could someone suggest how to obtain the expected result?

[Deepa Maheshvare]

idx = arrayfun( @(x)( find(nodes==x) ), subnodes )

works as expected, but I am not sure why the one posted above doesn't works

Answer 1

[Rik]

You muct have thought of this already (as it is one of your tags), but ismember does what you need:

A = ["G1", "V2", "G3", "G4", "V1"];
B = ["V1", "G4"];
[sharedvals,idxs] = ismember(B,A)

sharedvals = 1×2 logical array
   1   1

idxs = 1×2

5 4

If you want a column vector you can transpose it.

[Deepa Maheshvare]

Ahh, thanks. I had tried [sharedvals,idxs] = find(ismember(A, B)).