How to combine all columns of an array into one column?

Suppose, If I have three elements in array A = [6, 5, 3] and I want

A = [653] as the only one element. How should I do this?

And I want general solution for this problem as my number of array elements may change but I want single array element.

Kindly help.

Thank you.

Answer 1

[Turlough Hughes]

EDIT - More appropriate solution:

A = [6 5 3];
A_new = str2double(sprintf('%d',A))

Original answer (don't do this):

There's probably a more appropriate solution out there but the following should work fine:

A=[6 5 3]
str=num2str(A); %convert to string
str(isspace(str))=''; % remove spaces
A_new=str2num(str); % convert to number

[Ajinkya Bankar]

It worked. Thank you for the reply.

Answer 2

[Kelly Kearney]

Are the values in A always going to be less than 10? If not, what answer do you want?

I see two possibilities; treat each value as a string (as in Turlogh's answer):

fun1 = @(x) str2num(regexprep(num2str(x), '\s', ''));

Or treat each digit as ones, tens, hundreds place:

fun2 = @(x) sum(10.^(length(x)-1:-1:0) .* x);

Results:

fun1([6 5 3])
fun2([6 5 3])

fun1([1 10 5])
fun2([1 10 5])

ans =

   653


ans =

   653


ans =

        1105


ans =

   205