How can I include a repeated word into a matrix?

I have 2 matrices that look like this

2016_Subject_                                          
2016_Subject_                                          
2016_Subject_ 

_01   
_02
_03

and I need to put the word 'Speed' in between each line - Expected answer is

2016_Subject_Speed_01

2016_Subject_Speed_02

2016_Subject_Speed_03

this code

[L(i,1:end-2), 'Speed', L(i,end-2:end),]

where L is ls(targetfolder) ie. a list of the subfolders in a main folder and looks like

2016_Subject_01

2016_Subject_02

2016_Subject_03

doesn't work and comes up with the error

"Error using horzcat Dimensions of matrices being concatenated are not consistent."

which is only due to the inclusion of the words.

Any ideas how to overcome this?

Thanks in advance

[Stephen23]

@Eleanor H: are these data stored a character arrays or cell arrays ?

Your question is not clear: we don't know what data class your data are, nor what your expected output is.

[Azzi Abdelmalek]

You can post the expected result, because "put the word 'Speed' in between each line" is not clear

[Stephen23]

@Eleanor H: it is still not very clear exactly how your data are stored, but you can try experimenting with strcat to achieve what you want:

A = {...
    '2016_Subject_'
    '2016_Subject_'
    '2016_Subject_'};
B = {...
    '_01'
    '_02'
    '_03'};
strcat(A,'Speed',B)

creates this:

ans = 
  '2016_Subject_Speed_01 '
  '2016_Subject_Speed_02'
  '2016_Subject_Speed_03'

Answer 1

[Thorsten]

Use strcat

   L1 = ['2016_Subject_'; '2016_Subject_'; '2016_Subject_']
   L2 = ['_01'; '_02'; '_03'];
   strcat(L1, 'Speed', L2)

It also works with cells

   C1 = {'1_Subject_'; '10_Subject_'; '1000_Subject_'};
   C2 = {'_01'; '_02'; '_1000'};
   strcat(C1, 'Speed', C2)

Answer 2

[José-Luis]

a = repmat('2016_Subject_',3,1);
b = ['_01'; '_02'; '_03'];

your_array = cat(2,a,repmat('Speed',size(a,1),1),b);