Problem 67. Find common elements in matrix rows

Solution 854644

Submitted on 22 Mar 2016 by David Schafer

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Test	Status	Code Input and Output
1	Pass	x = []; y_correct = []; assert(isequal(common_by_row(x),y_correct)) siz = 0 0
2	Pass	x = [1e100; 1e100]; y_correct = [1e100]; assert(isequal(common_by_row(x),y_correct)) siz = 2 1 z = 1.0000e+100 z = 1.0000e+100 z = 1.0000e+100
3	Pass	x = [1; 2]; y_correct = []; assert(isequal(common_by_row(x),y_correct)) siz = 2 1 z = 1 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0
4	Pass	x = ones(10); y_correct = [1]; assert(isequal(common_by_row(x),y_correct)) siz = 10 10 z = 1 1 1 1 1 1 1 1 1 1 z = 1 z = 1 z = 1 z = 1 z = 1 z = 1 z = 1 z = 1 z = 1 z = 1
5	Pass	x = magic(10); y_correct = []; assert(isequal(common_by_row(x),y_correct)) siz = 10 10 z = 92 99 1 8 15 67 74 51 58 40 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0 z = Empty matrix: 1-by-0
6	Pass	x = wilkinson(9); y_correct = [0 1]; assert(isequal(common_by_row(x),y_correct)) siz = 9 9 z = 4 1 0 0 0 0 0 0 0 z = 0 1 z = 0 1 z = 0 1 z = 0 1 z = 0 1 z = 0 1 z = 0 1 z = 0 1 z = 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)) siz = 2 4 z = 3 -2 1 NaN z = -2 3 z = -2 3