dashes.m

plate = 'XX11XX';
N = ['0' '1' '2' '3' '4' '5' '6' '7' '8' '9'];
res = [];

% 1 = nummer
% 2 = letter

dash = [];
for i=1:6
    flag = 0;
    for n=1:length(N)
        if (plate(i) == N(n))
            flag = 1;
            res = [res 1];
            break
        end
    end
    if (flag == 0)
        res = [res 2]
    end
end

%validate outcome
if (res == [2 2 1 1 1 1])
    dashed = [plate(1:2) '-' plate(3:4) '-' plate(5:6)];
elseif (res == [1 1 1 1 2 2])
    dashed = [plate(1:2) '-' plate(3:4) '-' plate(5:6)];
elseif (res == [1 1 2 2 1 1])
    dashed = [plate(1:2) '-' plate(3:4) '-' plate(5:6)];
elseif (res == [2 2 1 1 2 2])
    dashed = [plate(1:2) '-' plate(3:4) '-' plate(5:6)];
elseif (res == [2 2 2 2 1 1])
    dashed = [plate(1:2) '-' plate(3:4) '-' plate(5:6)];
elseif (res == [1 1 2 2 2 2])
    dashed = [plate(1:2) '-' plate(3:4) '-' plate(5:6)];
elseif (res == [1 1 2 2 2 1])
    dashed = [plate(1:2) '-' plate(3:5) '-' plate(6)];
elseif (res == [1 2 2 2 1 1])
    dashed = [plate(1) '-' plate(2:4) '-' plate(5:6)];
elseif (res == [2 2 1 1 1 2])
    dashed = [plate(1:2) '-' plate(3:5) '-' plate(6)];
elseif (res == [2 1 1 1 2 2])
    dashed = [plate(1) '-' plate(2:4) '-' plate(5:6)];
elseif (res == [2 2 2 1 1 2])
    dashed = [plate(1:3) '-' plate(4:5) '-' plate(6)];
else
    dashed = 'WRONG PLATE';
end