separation of similar strings in cell array and store in different variables?

I have a cell array as data 1. I need to separate the rows containing 'aa' and save it in one variable (var1) similarly for 'bb','cc' and 'dd'.

a = {'aa';'bb';'cc';'dd';'aa';'bb';'dd';'cc';'aa'}
b = {'1';'2';'3';'4';'5';'6';'7';'8';'9'}
data1 =[a,b]

My output looks like below

Please help me if anyone knows

[Stephen23]

Using tables would likely make working with this data easier:

https://www.mathworks.com/help/matlab/tables.html

Answer 1

[Guillaume]

One way:

[~, ~, subs] = unique(data1(:, 1));
var = accumarray(subs, (1:size(data1, 1)).', [], @(rows) {data1(rows, :)})

[Jan]

+1. "var" is a builtin function, so prefer another name.

[Haritha]

I tried a lot finally i got it from you .Thanks a lot..