Add missing rows to a list in a cell array

I have a cell array with values like this

...

9 [10370;10371;10372]

10 [12933;12934]

11 10001

12 11320

13 [11347;11348]

14 [10362;10363]

17 [12632;12633]

...

And i want to add blank rows for all the missing numbers in the first collumn so it would look like this

...

9 [10370;10371;10372]

10 [12933;12934]

11 10001

12 11320

13 [11347;11348]

14 [10362;10363]

15

16

17 [12632;12633]

...

I have a list of how many items should appear on the first row but i'm having problems finding a way without using a for loop, the list is too big for that.

Answer 1

[cdawg]

Will this work?

m = {...
9	[10370;10371;10372]
10	[12933;12934]
11	10001
12	11320
13	[11347;11348]
14	[10362;10363]
17	[12632;12633]};

inds = cell2mat(m(:,1));
lastRow = 20;
M = cell(lastRow,2);
M(inds,2) = m(:,2);
M(inds,1) = m(:,1)

M = 20×2 cell array
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {[       9]}    {3×1 double}
    {[      10]}    {2×1 double}
    {[      11]}    {[   10001]}
    {[      12]}    {[   11320]}
    {[      13]}    {2×1 double}
    {[      14]}    {2×1 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}

[Raúl García Odriozola]

Exactly what i wanted, thank you for your help