Cody

# Problem 67. Find common elements in matrix rows

Solution 2666060

Submitted on 8 Jul 2020
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### Test Suite

Test Status Code Input and Output
1   Fail
x = []; y_correct = []; assert(isequal(common_by_row(x),y_correct))

ans = 0

Index in position 2 exceeds array bounds. Error in common_by_row (line 8) for i = 1:numel(x(:, 1)) Error in Test1 (line 3) assert(isequal(common_by_row(x),y_correct))

2   Fail
x = [1e100; 1e100]; y_correct = [1e100]; assert(isequal(common_by_row(x),y_correct))

ans = 1.0e+100 * 0.0000 1.0000

Error using zeros Requested array exceeds the maximum possible variable size. Error in common_by_row (line 6) temp = zeros([rows, colunm]); Error in Test2 (line 3) assert(isequal(common_by_row(x),y_correct))

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

ans = 2 2

Assertion failed.

4   Pass
x = ones(10); y_correct = [1]; assert(isequal(common_by_row(x),y_correct))

ans = 10 1

5   Fail
x = magic(10); y_correct = []; assert(isequal(common_by_row(x),y_correct))

ans = 10 100

Assertion failed.

6   Fail
x = wilkinson(9); y_correct = [0 1]; assert(isequal(common_by_row(x),y_correct))

ans = 9 4

Index in position 2 is invalid. Array indices must be positive integers or logical values. Error in common_by_row (line 10) temp(i, x(i, j)) = 1; Error in Test6 (line 3) assert(isequal(common_by_row(x),y_correct))

7   Fail
x = [3 -2 1 NaN; NaN 0 -2 3]; y_correct = [-2 3]; assert(isequal(common_by_row(x),y_correct))

ans = 2 3

Index in position 2 is invalid. Array indices must be positive integers or logical values. Error in common_by_row (line 10) temp(i, x(i, j)) = 1; Error in Test7 (line 3) assert(isequal(common_by_row(x),y_correct))