Cody

# Problem 498. Find the Kronecker Tensor Product without using KRON

Solution 85194

Submitted on 3 May 2012 by James
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### Test Suite

Test Status Code Input and Output
1   Pass
% test for 'KRON' usage fid = fopen(which('mykron'),'r'); c=onCleanup(@()fclose(fid)); tline=fgetl(fid); while ischar(tline) if (strfind(tline,'=kron')>0), error('Don''t use kron'); end if (strfind(tline,' kron')>0), error('Don''t use kron'); end if (strfind(tline,'+kron')>0)|(strfind(tline,'*kron')>0), error('Don''t use kron'); end if (strfind(tline,'-kron')>0), error('Don''t use kron'); end tline = fgetl(fid) end;

tline = '' tline = [ma,na] = size(x); tline = [mb,nb] = size(y); tline = [ia,ib] = meshgrid(1:ma,1:mb); tline = [ja,jb] = meshgrid(1:na,1:nb); tline = z = x(ia,ja).*y(ib,jb); tline = '' tline = end tline = '' tline = %This code written by profile_id 33802 tline = -1

2   Pass
%% test 1 x =1:3; y =2:4; y_correct = [2 3 4 4 6 8 6 9 12]; assert(isequal(mykron(x,y),y_correct))

3   Pass
%% test 2 x = randi(10,3,3); y = 2:4; z_correct = kron(x,y); assert(isequal(mykron(x,y),z_correct))

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