Cody

# Problem 67. Find common elements in matrix rows

Solution 2260458

Submitted on 7 May 2020 by Nathan Choi
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### Test Suite

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

r = 0

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

r = 2 a = 1.0000e+100 y = 1.0000e+100

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

r = 2 a = 1×0 empty double row vector

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

r = 10 a = 1 a = 1 a = 1 a = 1 a = 1 a = 1 a = 1 a = 1 a = 1 y = 1

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

r = 10 a = 1×0 empty double row vector a = 1×0 empty double row vector a = 1×0 empty double row vector a = 1×0 empty double row vector a = 1×0 empty double row vector a = 1×0 empty double row vector a = 1×0 empty double row vector a = 1×0 empty double row vector a = 1×0 empty double row vector

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

r = 9 a = 0 1 a = 0 1 a = 0 1 a = 0 1 a = 0 1 a = 0 1 a = 0 1 a = 0 1 y = 0 1

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

r = 2 a = -2 3 y = -2 3

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