Cody

# Problem 67. Find common elements in matrix rows

Solution 2015262

Submitted on 12 Nov 2019 by Weiyang Zhang
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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))

y = []

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

y = [] row_unique = 1 2

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

y = [] row_unique = 1

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

y = [] row_unique = 1 2 3 4 5 6 7 8 9 10

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

y = [] row_unique = 1 row_unique = 1 row_unique = 1 row_unique = 1 row_unique = 1 row_unique = 1 row_unique = 1 row_unique = 1 row_unique = 1 row_unique = 1

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

y = [] row_unique = 1 2 3 4 5 6 7 8 9 row_unique = 1 2 3 4 5 6 7 8 9 row_unique = 1 9

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

y = [] row_unique = 1 2 row_unique = 1 row_unique = 1 2 row_unique = 0×1 empty double column vector