How to append several elements to a single element in an array?

I have an array like:

    A = [1 2 3 4 5 6 7 8 9 10];

I want to merge all the elements into a single element, like:

A = [12345678910];

but I cannot see any clear way to do so, as functions like 'reshape' or 'horizcat' simple place all the elements vertically, instead of appending all the values into one long element.

Any help would be really appreciated!

Thanks.

[Stephen23]

Note to others: see my answer if you want a simpler, faster solution.

Answer 1

[Birdman]

%%to see the complete number with all digits
format longg
str2double(strjoin(string(A),''))

[Patrick Ellison]

I added it to the code:

A = [1 2 3 4 5 6 7 8 9 10];

%to see the complete number with all digits
format long
B = str2double(strjoin(string(A),''));

I am afraid it produces '1.234567891000000e+10' as the value within B, am I implementing it incorrectly?

[Birdman]

Type

format longg

with 2 g. This only changes its display format.

[Patrick Ellison]

I am still getting the same result, is there anything else I need to include in my implementation of it?

[Birdman]

No you don't. But be aware of the fact that

12345678910

is displayed in a scientific form of

1.2346e+10

by default. My only aim was to show you that the number is equal to what you want. So the following code:

B = str2double(strjoin(string(A),''));

actually does what you want.

[Patrick Ellison]

Ok cheers!

[Birdman]

You are welcome!

Answer 2

[Stephen23]

Much faster and simpler than using string, strjoin, and str2double:

>> A = [1 2 3 4 5 6 7 8 9 10];
>> N = sscanf(sprintf('%d',A),'%f')
N =          12345678910