MATLAB: How to repeat subjects label by simplify way

cell arrayrowstrings

Hi everyone
I have row_header like this:
  row_header={'Subjects','NB1','NB1','NB1','NB1','NB1','NB1','NB1','NB1','NB1','NB1','NB2','NB2','NB2','NB2','NB2','NB2','NB2','NB2','NB2','NB2',...
      'NB3','NB3','NB3','NB3','NB3','NB3','NB3','NB3','NB3','NB3','NB4','NB4','NB4','NB4','NB4','NB4','NB4','NB4','NB4','NB4',...
      'NB5','NB5','NB5','NB5','NB5','NB5','NB5','NB5','NB5','NB5','NB6','NB6','NB6','NB6','NB6','NB6','NB6','NB6','NB6','NB6',...
      'NB7','NB7','NB7','NB7','NB7','NB7','NB7','NB7','NB7','NB7','NB8','NB8','NB8','NB8','NB8','NB8','NB8','NB8','NB8','NB8',...
      'NB9','NB9','NB9','NB9','NB9','NB9','NB9','NB9','NB9','NB9','NB10','NB10','NB10','NB10','NB10','NB10','NB10','NB10','NB10','NB10',...
      'NB11','NB11','NB11','NB11','NB11','NB11','NB11','NB11','NB11','NB11','NB12','NB12','NB12','NB12','NB12','NB12','NB12','NB12','NB12','NB12',...
      'NB13','NB13','NB13','NB13','NB13','NB13','NB13','NB13','NB13','NB13','NB14','NB14','NB14','NB14','NB14','NB14','NB14','NB14','NB14','NB14',...
      'NB15','NB15','NB15','NB15','NB15','NB15','NB15','NB15','NB15','NB15','NB16','NB16','NB16','NB16','NB16','NB16','NB16','NB16','NB16','NB16',...
      'NB17','NB17','NB17','NB17','NB17','NB17','NB17','NB17','NB17','NB17','NB18','NB18','NB18','NB18','NB18','NB18','NB18','NB18','NB18','NB18'};
How to achieve it in a simpler way？
Thankyou
guke su

Best Answer

compose("NB%d",1:10) % edited after Guillaume’s comment
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