Cody

# Problem 36. Find relatively common elements in matrix rows

Solution 2924452

Submitted on 8 Sep 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 = 0×2 empty double matrix y = 1×0 empty double row vector

Assertion failed.

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

ans = 1.0e+100 * 1.0000 0.0000 y = 1.0000e+100

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

ans = 1 1 2 1 y = 1×0 empty double row vector

Assertion failed.

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

ans = 1 10 y = 1

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

ans = 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 1 54 1 55 1 56 1 57 1 58 1 59 1 60 1 61 1 62 1 63 1 64 1 65 1 66 1 67 1 68 1 69 1 70 1 71 1 72 1 73 1 74 1 75 1 76 1 77 1 78 1 79 1 80 1 81 1 82 1 83 1 84 1 85 1 86 1 87 1 88 1 89 1 90 1 91 1 92 1 93 1 94 1 95 1 96 1 97 1 98 1 99 1 100 1 y = 1×0 empty double row vector

Assertion failed.

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

ans = 0 9 1 9 2 2 3 2 4 2 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))

ans = -2 2 0 1 1 1 3 2 NaN NaN NaN NaN y = -2 3

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