Sort values in a cell array

Hi guys, It's amazing how much some people know.

Well, this is my case:

I have a vector. Suppose this:

A=[90,45,38,51];

To this vector correspond another vector. Some values may be duplicates but it is not known how many.

B=[8,1,8,3]

So, I want to sort them and set the initial values in a cell array. The result would be this:

C={[45],[51],[90,38] }

I wish I didn't have to use loop.

Thank you all for your help, especially helping me with this :)

Answer 1

[Stephen23]

A = [90,45,38,51];
B = [8,1,8,3];
[~,~,X] = unique(B);
C = accumarray(X,A(:),[],@(v){v})

C = 3×1 cell array
    {[      45]}
    {[      51]}
    {2×1 double}

Checking the content of C:

C{:}

ans = 45

ans = 51

ans = 2×1

90 38

[Sergio Rojas Blanco]

Stephen23, thank you very much. How fast!

Answer 2

[Bruno Luong]

Another method

B=[8,1,8,3];
A=[90,45,38,51];

[Bs,i]=sort(B);
mat2cell(A(i),1,diff(find([true,diff(Bs)>0,true])))

ans = 1×3 cell array
    {[45]}    {[51]}    {[90 38]}

% or more compact
mat2cell(A(i),1,diff(find([1,diff(Bs),1])))

ans = 1×3 cell array
    {[45]}    {[51]}    {[90 38]}

[Sergio Rojas Blanco]

Bruno Luong, very good. Thank you