Cody

Problem 67. Find common elements in matrix rows

Solution 2681669

Submitted on 12 Jul 2020
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

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

y = []

Index in position 1 exceeds array bounds. Error in common_by_row (line 3) an=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))

y = [] an = 1.0000e+100 y = 1.0000e+100

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

y = [] an = 1

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

y = [] an = 1 1 1 1 1 1 1 1 1 1 y = 1 y = 1 1 y = 1 1 1 y = 1 1 1 1 y = 1 1 1 1 1 y = 1 1 1 1 1 1 y = 1 1 1 1 1 1 1 y = 1 1 1 1 1 1 1 1 y = 1 1 1 1 1 1 1 1 1 y = 1 1 1 1 1 1 1 1 1 1

Assertion failed.

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

y = [] an = 92 99 1 8 15 67 74 51 58 40

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

y = [] an = 4 1 0 0 0 0 0 0 0 y = 1 y = 1 0 y = 1 0 0 y = 1 0 0 0 y = 1 0 0 0 0 y = 1 0 0 0 0 0 y = 1 0 0 0 0 0 0 y = 1 0 0 0 0 0 0 0

Assertion failed.

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

y = [] an = 3 -2 1 NaN y = 3 y = 3 -2

Assertion failed.