Solution 2413275

Submitted on 29 May 2020 by Haoyu Dai

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1 Comment

1 Comment

Haoyu Dai on 29 May 2020

function y = common_by_row(x)
y=[];
[r,c]=size(x);
if r>0
a=x(1,:);
cnt=zeros(1,c);
for j=1:c
for i=1:r
if isempty(find(x(i,:)==x(1,j)))==0
cnt(j)=cnt(j)+1;
end
end
end
for j=1:c
if cnt(j)==r&&x(1,j)~=NaN&&ismember(x(1,j),y)==0
y=[y x(1,j)];
end
end
y=sort(y);
end
end

Test Suite

Test	Status	Code Input and Output
1	Pass	x = []; y_correct = []; assert(isequal(common_by_row(x),y_correct))
2	Pass	x = [1e100; 1e100]; y_correct = [1e100]; assert(isequal(common_by_row(x),y_correct))
3	Pass	x = [1; 2]; y_correct = []; assert(isequal(common_by_row(x),y_correct))
4	Pass	x = ones(10); y_correct = [1]; assert(isequal(common_by_row(x),y_correct))
5	Pass	x = magic(10); y_correct = []; assert(isequal(common_by_row(x),y_correct))
6	Pass	x = wilkinson(9); y_correct = [0 1]; assert(isequal(common_by_row(x),y_correct))
7	Pass	x = [3 -2 1 NaN; NaN 0 -2 3]; y_correct = [-2 3]; assert(isequal(common_by_row(x),y_correct))

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Problem 67. Find common elements in matrix rows

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