clc, clear all
maxval=1000;
mat= round(rand([90000 6])*maxval); % random input data (not sorted)
matwithsum=sortrows([sum(mat,2), mat],1); % sum or rows is first column and sort based on column1
mat=matwithsum(:,2:end); % removing first column
disp('rows of input matrix (mat) are sorted based on sum of column values');
str=sprintf('%s %g %s %g','Size of Input Matrix (mat)',size(mat,1),'-by-',size(mat,2)); disp(str);
for k=1:3
srow=mat(round(rand(1)*size(mat,1)),:); %choosing arbtriary any row from mat
disp('----------------------------------------------------');
str=sprintf('%s %s','searching row:',num2str(srow)); disp(str);
time1=cputime;
i1=bsearchmatrows(mat,srow,'first');
time1=cputime-time1;
str=sprintf('%s %g','bsearchmatrows: found at index',i1); disp(str);
str=sprintf('%s %g','Time taken by bsearchmatrows method',time1); disp(str);
time2=cputime;
i2=find(ismember(mat,srow, 'rows'));
time2=cputime-time2;
str=sprintf('%s %g','MATLAB: found at index',i2); disp(str);
str=sprintf('%s %g','Time taken by MATLAB builtin method',time2); disp(str);
end
% % % --------------------------------
% % % Author: Dr. Murtaza Khan
% % % Email : drkhanmurtaza@gmail.com
% % % --------------------------------
