% function I = findrows(A, B)
% 
%  A function that given two string arrays A and B,
%  returns the list of row indices in A for which 
%  there is a match in B.  It assumes that both A and
%  B are sorted alphabetically on entry, and that B
%  is smaller than A.   Furthermore, it assumes there
%  is a match in A for every entry in B.  
%
function I = findrows(A, B)

    [mA,nA] = size(A);
    [mB,nB] = size(B);

	I = [];
	Aptr = 1;
	Bptr = 1;

	for k = 1:mB
		t = deblank(B(k,:));
		for j = Aptr:mA
			if (strcmp(deblank(A(j,:)),t))
				break;
			end
		end
		Aptr = j;
		I = [I; j];
	end
