MATLAB实现排序

 

•function y=selectionsort(x)
%选择法排序.
r=length(x);
for i=1:r
   lowindex=i;
   for j=i+1:r
       if x(j)<x(lowindex)
        lowindex=j;
    end 
   end
   temp=x(i);
         x(i)=x(lowindex);
           x(lowindex)=temp;
end
y=x;

 .............................................................................................

•function y=insertionsort(x)

•%插入法排序.

•

•r=length(x);

•for i=1:r

•   for j=1:r-1

•       if x(j)>x(j+1)

•           temp=x(j);

•           x(j)=x(j+1);

•           x(j+1)=temp;

•       end

•   end

•end

•y=x;

.............................................................................................................

  This is written by others;

 

•function y=bubblesort(x)

•%冒泡法排序.

•

•r=length(x);

•for i=1:r-1

•   for j=i+1:r

•       if x(i)>x(j)

•           temp=x(i);

•           x(i)=x(j);

•           x(j)=temp;

•       end

•   end

•end

•y=x;