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))
k =
1
k =
2
y =
1.0000e+100

3  Pass 
x = [1; 2];
y_correct = [];
assert(isequal(common_by_row(x),y_correct))
k =
1
k =
1

4  Pass 
x = ones(10);
y_correct = [1];
assert(isequal(common_by_row(x),y_correct))
k =
1
k =
2
k =
3
k =
4
k =
5
k =
6
y =
1

5  Pass 
x = magic(10);
y_correct = [];
assert(isequal(common_by_row(x),y_correct))
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1
k =
1

6  Pass 
x = wilkinson(9);
y_correct = [0 1];
assert(isequal(common_by_row(x),y_correct))
k =
1
k =
2
k =
3
k =
4
k =
5
y =
0
k =
1
k =
2
k =
3
k =
4
k =
5
y =
0 1
k =
1
k =
2
k =
1
k =
2
k =
1
k =
2

7  Pass 
x = [3 2 1 NaN; NaN 0 2 3];
y_correct = [2 3];
assert(isequal(common_by_row(x),y_correct))
k =
1
k =
2
y =
2
k =
1
k =
1
k =
1
k =
2
y =
2 3

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