how to save all results of for loop

Hi, I wrote this program & my data set is:

I want to do my thesis as well as possible. I want to save all results of for loop (all s) in a matrix. can anyone help me ? Code:

text1 = fileread('D:/a.txt');
length1=length(text1);
whitespace1 = find(text1,' ');
 w=strfind(text1,' ');
 u=1:size(w,2);
 %s=zeros(size(w,2)-1,2)
 for i=1:size(w,2)-1;
     s = text1(w(i)+1:w(i+1)-1)
 end