Cody

Problem 67. Find common elements in matrix rows

Solution 2939431

Submitted on 12 Sep 2020 by Benjamin
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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))

r = 1 2 y = 1.0000e+100

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

r = 1 r = 2 y = []

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

r = 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 y = 1

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

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

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

r = 3 4 5 6 7 8 9 4 5 6 7 8 9 1 5 6 7 8 9 1 2 6 7 8 9 1 2 3 5 7 8 9 1 2 3 4 8 9 1 2 3 4 5 9 1 2 3 4 5 6 1 2 3 4 5 6 7 r = 2 1 3 2 4 3 4 5 4 6 5 6 7 6 8 7 9 8 r = 3 7 r = 2 8 r = 1 9 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 = 1 2 r = 2 r = 1 r = 1 2 r = 0×1 empty double column vector r = 0×1 empty double column vector y = -2 3

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