Cody

# Problem 1508. Change the sign

Solution 1983701

Submitted on 20 Oct 2019
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### Test Suite

Test Status Code Input and Output
1   Fail
x = [-1 2 3;1 -2 -2;3 3 -3]; y_correct = [ 1 -3 -3;-2 2 -2;-3 -3 3]; assert(isequal(SignChange(x),y_correct))

ans = 3 1 3

Output argument "y" (and maybe others) not assigned during call to "SignChange". Error in Test1 (line 3) assert(isequal(SignChange(x),y_correct))

2   Fail
x = magic(4); y_correct = [16 -13 -13 -13; -10 11 -10 -10;-12 -12 6 -12;-15 -15 -15 1]; assert(isequal(SignChange(x),y_correct))

ans = 16 11 12 15

Output argument "y" (and maybe others) not assigned during call to "SignChange". Error in Test2 (line 3) assert(isequal(SignChange(x),y_correct))

3   Fail
x = zeros(4); y_correct = x; assert(isequal(SignChange(x),y_correct))

ans = 0 0 0 0

Output argument "y" (and maybe others) not assigned during call to "SignChange". Error in Test3 (line 3) assert(isequal(SignChange(x),y_correct))

4   Fail
x = [-1 1 -1;1 -1 1;-1 -2 -3]; y_correct = [1 -1 -1;-1 1 -1;-2 -2 3]; assert(isequal(SignChange(x),y_correct))

ans = 1 1 -1

Output argument "y" (and maybe others) not assigned during call to "SignChange". Error in Test4 (line 3) assert(isequal(SignChange(x),y_correct))