MATLAB: Reshaping an array of n rows in a custom way

MATLABrearranging arrays

I have an output file (txt) from a software that appears in the following form (nx2 array).
1     4.5	
1     5
1     6.4
2     7
2     3.5
2     4
3     2
3     1.1
3     9
In order to use this data in another software, i want to rearrange the array in the form (nx4) so that i can get an outputfile that has the data in the following form.
1     4.5     5     6.4
2     7      3.5     4
3     2      1.1    9
I would appreciate if someone can guide me to get the data in the desired format.

Best Answer

B = [unique(A(:,1)) reshape(A(:,2)',[],3)']
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