Find the index of the first values in ascending array that are greater than each values from random array without for loop

Hello,

I have a random vector A=rand(n,1) and a given vector B(n,1) which is sorted in ascending values. I want to find the index of the first value of A that is greater than each values of my random vector. For example with:

A = [1 ; 6 ; 2 ; 8 ; 3]; B = [2 ; 4 ; 6 ; 8 ;10];

It would give: indexes = [1 4 2 5 2].

My current solution consist of using a for loop:

ix = zeros(N,1);
for i = 1:N
   r = rand;
   ix(i) = find(B>A,1);
end

I would like to be able to do the same without using a for loop in order to increase the speed of the operation.

Thanks

Answer 1

[Walter Roberson]

Second output of either histc or histcounts

[Walter Roberson]

Oh wait I think it is the third output of histcounts. I seldom use it and keep forgetting that the output order is different.

[Guillaume]

Or just the first output of discretize

discretize(B, A)+1

[Jérémy]

Works like a charm ! Thanks