Cody

# Problem 67. Find common elements in matrix rows

Solution 1910873

Submitted on 24 Aug 2019
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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))

Index in position 1 exceeds array bounds. Error in common_by_row (line 5) u = unique(x(1, :)) Error in Test1 (line 3) assert(isequal(common_by_row(x),y_correct))

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

u = 1.0000e+100 a = [] st = logical 1 a = 1.0000e+100 y = 1.0000e+100

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

u = 1 a = [] st = logical 1 st = logical 0 y = []

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

u = 1 a = [] st = logical 1 a = 1 y = 1

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

u = 1 8 15 40 51 58 67 74 92 99 a = [] st = logical 1 st = logical 0 st = logical 1 st = logical 0 st = logical 1 st = logical 0 st = logical 1 st = logical 0 st = logical 1 st = logical 0 st = logical 1 st = logical 0 st = logical 1 st = logical 0 st = logical 1 st = logical 0 st = logical 1 st = logical 0 st = logical 1 st = logical 0 y = []

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

u = 0 1 4 a = [] st = logical 1 a = 0 st = logical 1 a = 0 1 st = logical 1 st = logical 0 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))

u = -2 1 3 NaN a = [] st = logical 1 a = -2 st = logical 1 st = logical 0 st = logical 1 a = -2 3 st = logical 1 st = logical 0 y = -2 3