MATLAB: How to create a matrix from existing matrix

Question

I have matrix A and need to create matrix B. Please let me know how to do it Sample: if true

   A  B
0.25  0
  0.25    
        0.50    
  0.75  
        1
0.20  1.20
  1.40
  1.60
  1.80
  2
0.15  2.15
  2.30  
  2.45
  2.60  
  2.85
  3
0.20  3.20
  3.40    
  3.60  
  3.80
  4
0.10  4.10
  4.20
  4.30  
  4.40
  4.50
  4.60  
  4.70
  4.80
  4.90
  5
-  -
-  -
-  -

Answer 1

a = [0.25 0.20 0.15 0.20 0.1];
your_mat = cell2mat(arrayfun(@(x,y) ((x:x:1)'+y)',a,0:numel(a)-1,'uniformoutput',false));
your_mat = [0;your_mat'];