Cody

# Problem 67. Find common elements in matrix rows

Solution 2271273

Submitted on 11 May 2020 by Anvitha S
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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))

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

check = 1.0000e+100 count = 0 count = 1 count = 2 n = 1.0000e+100

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

check = 1 count = 0 count = 1 n = 0×1 empty double column vector n = []

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

check = 1 1 1 1 1 1 1 1 1 1 count = 0 0 0 0 0 0 0 0 0 0 count = 1 0 0 0 0 0 0 0 0 0 count = 1 1 0 0 0 0 0 0 0 0 count = 1 1 1 0 0 0 0 0 0 0 count = 1 1 1 1 0 0 0 0 0 0 count = 1 1 1 1 1 0 0 0 0 0 count = 1 1 1 1 1 1 0 0 0 0 count = 1 1 1 1 1 1 1 0 0 0 count = 1 1 1 1 1 1 1 1 0 0 count = 1 1 1 1 1 1 1 1 1 0 count = 1 1 1 1 1 1 1 1 1 1 count = 2 1 1 1 1 1 1 1 1 1 count = 2 2 1 1 1 1 1 1 1 1 count = 2 2 2 1 1 1 1 1 1 1 count = 2 2 2 2 1 1 1 1 1 1 count = 2 2 2 2 2 1 1 1 1 1 count = 2 2 2 2 2 2 1 1 1 1 count = 2 2 2 2 2 2 2 1 1 1 count = 2 2 2 2 2 2 2 2 1 1 count = 2 2 2 2 2 2 2 2 2 1 count = 2 2 2 2 2 2 2 2 2 2 count = 3 2 2 2 2 2 2 2 2 2 count = 3 3 2 2 2 2 2 2 2 2 count = 3 3 3 2 2 2 2 2 2 2 count = 3 3 3 3 2 2 2 2 2 2 count = 3 3 3 3 3 2 2 2 2 2 count = 3 3 3 3 3 3 2 2 2 2 count = 3 3 3 3 3 3 3 2 2 2 count = 3 3 3 3 3 3 3 3 2 2 count = 3 3 3 3 3 3 3 3 3 2 count = 3 3 3 3 3 3 3 3 3 3 count = 4 3 3 3 3 3 3 3 3 3 count = 4 4 3 3 3 3 3 3 3 3 count = 4 4 4 3 3 3 3 3 3 3 count = 4 4 4 4 3 3 3 3 3 3 count = 4 4 4 4 4 3 3 3 3 3 count = 4 4 4 4 4 4 3 3 3 3 count = 4 4 4 4 4 4 4 3 3 3 count = 4 4 4 4 4 4 4 4 3 3 count = 4 4 4 4 4 4 4 4 4 3 count = 4 4 4 4 4 4 4 4 4 4 count = 5 4 4 4 4 4 4 4 4 4 count = 5 5 4 4 4 4 4 4 4 4 count = 5 5 5 4 4 4 4 4 4 4 count = 5 5 5 5 4 4 4 4 4 4 count = 5 5 5 5 5 4 4 4 4 4 count = 5 5 5 5 5 5 4 4 4 4 count = 5 5 5 5 5 5 5 4 4 4 count = 5 5 5 5 5 5 5 5 4 4 count = 5 5 5 5 5 5 5 5 5 4 count = 5 5 5 5 5 5 5 5 5 5 count = 6 5 5 5 5 5 5 5 5 5 count = 6 6 5 5 5 5 5 5 5 5 count = 6 6 6 5 5 5 5 5 5 5 count = 6 6 6 6 5 5 5 5 5 5 count = 6 6 6 6 6 5 5 5 5 5 count = 6 6 6 6 6 6 5 5 5 5 count = 6 6 6 6 6 6 6 5 5 5 count = 6 6 6 6 6 6 6 6 5 5 count = 6 6 6 6 6 6 6 6 6 5 count = 6 6 6 6 6 6 6 6 6 6 count = 7 6 6 6 6 6 6 6 6 6 count = 7 7 6 6 6 6 6 6 6 6 count = 7 7 7 6 6 6 6 6 6 6 count = 7 7 7 7 6 6 6 6 6 6 count = 7 7 7 7 7 6 6 6 6 6 count = 7 7 7 7 7 7 6 6 6 6 count = 7 7 7 7 7 7 7 6 6 6 count = 7 7 7 7 7 7 7 7 6 6 count = 7 7 7 7 7 7 7 7 7 6 count = 7 7 7 7 7 7 7 7 7 7 count = 8 7 7 7 7 7 7 7 7 7 count = 8 8 7 7 7 7 7 7 7 7 count = 8 8 8 7 7 7 7 7 7 7 count = 8 8 8 8 7 7 7 7 7 7 count = 8 8 8 8 8 7 7 7 7 7 count = 8 8 8 8 8 8 7 7 7 7 count = 8 8 8 8 8 8 8 7 7 7 count = 8 8 8 8 8 8 8 8 7 7 count = 8 8 8 8 8 8 8 8 8 7 count = 8 8 8 8 8 8 8 8 8 8 count = 9 8 8 8 8 8 8 8 8 8 count = 9 9 8 8 8 8 8 8 8 8 count = 9 9 9 8 8 8 8 8 8 8 count = 9 9 9 9 8 8 8 8 8 8 count = 9 9 9 9 9 8 8 8 8 8 count = 9 9 9 9 9 9 8 8 8 8 count = 9 9 9 9 9 9 9 8 8 8 count = 9 9 9 9 9 9 9 9 8 8 count = 9 9 9 9 9 9 9 9 9 8 count = 9 9 9 9 9 9 9 9 9 9 count = 10 9 9 9 9 9 9 9 9 9 count = 10 10 9 9 9 9 9 9 9 9 count = 10 10 10 9 9 9 9 9 9 9 count = 10 10 10 10 9 9 9 9 9 9 count = 10 10 10 10 10 9 9 9 9 9 count = 10 10 10 10 10 10 9 9 9 9 count = 10 10 10 10 10 10 10 9 9 9 count = 10 10 10 10 10 10 10 10 9 9 count = 10 10 10 10 10 10 10 10 10 9 count = 10 10 10 10 10 10 10 10 10 10 n = 1

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

check = 92 99 1 8 15 67 74 51 58 40 count = 0 0 0 0 0 0 0 0 0 0 count = 1 0 0 0 0 0 0 0 0 0 count = 1 1 0 0 0 0 0 0 0 0 count = 1 1 1 0 0 0 0 0 0 0 count = 1 1 1 1 0 0 0 0 0 0 count = 1 1 1 1 1 0 0 0 0 0 count = 1 1 1 1 1 1 0 0 0 0 count = 1 1 1 1 1 1 1 0 0 0 count = 1 1 1 1 1 1 1 1 0 0 count = 1 1 1 1 1 1 1 1 1 0 count = 1 1 1 1 1 1 1 1 1 1 n = 1×0 empty double row vector n = []

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

check = 4 1 0 0 0 0 0 0 0 count = 0 0 0 0 0 0 0 0 0 count = 1 0 0 0 0 0 0 0 0 count = 1 1 0 0 0 0 0 0 0 count = 1 1 1 0 0 0 0 0 0 count = 1 1 1 1 0 0 0 0 0 count = 1 1 1 1 1 0 0 0 0 count = 1 1 1 1 1 1 0 0 0 count = 1 1 1 1 1 1 1 0 0 count = 1 1 1 1 1 1 1 1 0 count = 1 1 1 1 1 1 1 1 1 count = 1 2 1 1 1 1 1 1 1 count = 1 2 2 1 1 1 1 1 1 count = 1 2 2 2 1 1 1 1 1 count = 1 2 2 2 2 1 1 1 1 count = 1 2 2 2 2 2 1 1 1 count = 1 2 2 2 2 2 2 1 1 count = 1 2 2 2 2 2 2 2 1 count = 1 2 2 2 2 2 2 2 2 count = 1 3 2 2 2 2 2 2 2 count = 1 3 3 2 2 2 2 2 2 count = 1 3 3 3 2 2 2 2 2 count = 1 3 3 3 3 2 2 2 2 count = 1 3 3 3 3 3 2 2 2 count = 1 3 3 3 3 3 3 2 2 count = 1 3 3 3 3 3 3 3 2 count = 1 3 3 3 3 3 3 3 3 count = 1 4 3 3 3 3 3 3 3 count = 1 4 4 3 3 3 3 3 3 count = 1 4 4 4 3 3 3 3 3 count = 1 4 4 4 4 3 3 3 3 count = 1 4 4 4 4 4 3 3 3 count = 1 4 4 4 4 4 4 3 3 count = 1 4 4 4 4 4 4 4 3 count = 1 4 4 4 4 4 4 4 4 count = 1 5 4 4 4 4 4 4 4 count = 1 5 5 4 4 4 4 4 4 count = 1 5 5 5 4 4 4 4 4 count = 1 5 5 5 5 4 4 4 4 count = 1 5 5 5 5 5 4 4 4 count = 1 5 5 5 5 5 5 4 4 count = 1 5 5 5 5 5 5 5 4 count = 1 5 5 5 5 5 5 5 5 count = 1 6 5 5 5 5 5 5 5 count = 1 6 6 5 5 5 5 5 5 count = 1 6 6 6 5 5 5 5 5 count = 1 6 6 6 6 5 5 5 5 count = 1 6 6 6 6 6 5 5 5 count = 1 6 6 6 6 6 6 5 5 count = 1 6 6 6 6 6 6 6 5 count = 1 6 6 6 6 6 6 6 6 count = 1 7 6 6 6 6 6 6 6 count = 1 7 7 6 6 6 6 6 6 count = 1 7 7 7 6 6 6 6 6 count = 1 7 7 7 7 6 6 6 6 count = 1 7 7 7 7 7 6 6 6 count = 1 7 7 7 7 7 7 6 6 count = 1 7 7 7 7 7 7 7 6 count = 1 7 7 7 7 7 7 7 7 count = 1 8 7 7 7 7 7 7 7 count = 1 8 8 7 7 7 7 7 7 count = 1 8 8 8 7 7 7 7 7 count = 1 8 8 8 8 7 7 7 7 count = 1 8 8 8 8 8 7 7 7 count = 1 8 8 8 8 8 8 7 7 count = 1 8 8 8 8 8 8 8 7 count = 1 8 8 8 8 8 8 8 8 count = 2 8 8 8 8 8 8 8 8 count = 2 9 8 8 8 8 8 8 8 count = 2 9 9 8 8 8 8 8 8 count = 2 9 9 9 8 8 8 8 8 count = 2 9 9 9 9 8 8 8 8 count = 2 9 9 9 9 9 8 8 8 count = 2 9 9 9 9 9 9 8 8 count = 2 9 9 9 9 9 9 9 8 count = 2 9 9 9 9 9 9 9 9 n = 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))

check = 3 -2 1 NaN count = 0 0 0 0 count = 1 0 0 0 count = 1 1 0 0 count = 1 1 1 0 count = 2 1 1 0 count = 2 2 1 0 n = -2 3