how to add anew column to the table using MATLAB

I have Fatures data of 30*5 of size.I would like to add a column to the table as "class" and In that class every 10 rows has to named differently.First 10 rows as "Helathy' then 11 to 20 as "Myopathy" and 21 to 30 as "Neuropathy".

X=randi(10,30,5);

X=arry2table(X,'variableNames',{'feat1','feat2',feat3',feat4','feat5'};

Now I need to add a column to the table (values as taken as example) so the resultatnt must be

Answer 1

[Stephen23]

M = randi(10,30,5);
T = array2table(M,'variableNames',{'feat1','feat2','feat3','feat4','feat5'})

T = 30×5 table
    feat1    feat2    feat3    feat4    feat5
    _____    _____    _____    _____    _____

      9        9        2        1        3  
      6        2       10        2        3  
      9        2        1        3        1  
      9        5        4        1        3  
      2        1        4        6        8  
      8       10        7       10        3  
      7       10        6        7        9  
      5        9        8        3        7  
      7        7        7        6        2  
      8        9        3        7        4  
      1        1        2        7        8  
      2        5        5        2        3  
      3        2        1        8       10  
      5        2        4        7        7  
     10        4        1        2        4  
      8        3        9        4        8  

T.Class = repelem(["Healthy";"Myopathy";"Neuropathy"],10,1)

T = 30×6 table
    feat1    feat2    feat3    feat4    feat5      Class   
    _____    _____    _____    _____    _____    __________

      9        9        2        1        3      "Healthy" 
      6        2       10        2        3      "Healthy" 
      9        2        1        3        1      "Healthy" 
      9        5        4        1        3      "Healthy" 
      2        1        4        6        8      "Healthy" 
      8       10        7       10        3      "Healthy" 
      7       10        6        7        9      "Healthy" 
      5        9        8        3        7      "Healthy" 
      7        7        7        6        2      "Healthy" 
      8        9        3        7        4      "Healthy" 
      1        1        2        7        8      "Myopathy"
      2        5        5        2        3      "Myopathy"
      3        2        1        8       10      "Myopathy"
      5        2        4        7        7      "Myopathy"
     10        4        1        2        4      "Myopathy"
      8        3        9        4        8      "Myopathy"