Is there a way to "vectorize" this segment of code?

%  turn each of these string array rows into integers
[rows,cols] = size(permsList);
permsNbrs = zeros(rows,1);
a = string(permsList);  % convert to string, so we can use strcat
for i = 1:rows
    b = "";
    for j = 1:cols
        b = strcat(b,a(i,j));
    end % for j
    permsNbrs(i,1) = str2double(b);  
end  % for i

[Matt J]

We don't have the input permsList, so we do not know what anything is.

Answer 1

[Stephen23]

S = string(randi([0,9], 5,4))

S = 5×4 string array
    "0"    "4"    "8"    "8"
    "6"    "1"    "1"    "3"
    "8"    "2"    "6"    "7"
    "2"    "8"    "5"    "5"
    "7"    "2"    "6"    "6"

D = str2double(join(S,""))

D = 5×1

488 6113 8267 2855 7266

[David Rikert]

Very clean. Thank you.

Answer 2

[Matt J]

I'm going to guess that this is what you are trying to do.

permsList=string(randi([0,9], 5,4))

permsList = 5×4 string array
    "5"    "0"    "3"    "3"
    "1"    "6"    "6"    "9"
    "4"    "9"    "5"    "9"
    "5"    "3"    "2"    "3"
    "8"    "7"    "7"    "0"

permsNbrs = str2double(permsList)*10.^( width(permsList)-1:-1:0)'

permsNbrs = 5×1

5033 1669 4959 5323 8770

[David Rikert]

Thanks. Exactly what I was looking for.

[Matt J]

You're quite welcome, but please Accept-click the answer (green button) to indicate so.