Cody

# Problem 1508. Change the sign

Solution 2494994

Submitted on 8 Jun 2020 by Nikolaos Nikolaou
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### Test Suite

Test Status Code Input and Output
1   Pass
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))

t1 = 1 2 3 y = -3 -3 -3 -2 -2 -2 -3 -3 -3 y = 1 -3 -3 -2 -2 -2 -3 -3 -3 y = 1 -3 -3 -2 2 -2 -3 -3 -3 y = 1 -3 -3 -2 2 -2 -3 -3 3

2   Pass
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))

t1 = 16 11 6 1 y = -13 -13 -13 -13 -10 -10 -10 -10 -12 -12 -12 -12 -15 -15 -15 -15 y = 16 -13 -13 -13 -10 -10 -10 -10 -12 -12 -12 -12 -15 -15 -15 -15 y = 16 -13 -13 -13 -10 11 -10 -10 -12 -12 -12 -12 -15 -15 -15 -15 y = 16 -13 -13 -13 -10 11 -10 -10 -12 -12 6 -12 -15 -15 -15 -15 y = 16 -13 -13 -13 -10 11 -10 -10 -12 -12 6 -12 -15 -15 -15 1

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

t1 = 0 0 0 0 y = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 y = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 y = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 y = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 y = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

4   Pass
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))

t1 = 1 1 3 y = -1 -1 -1 -1 -1 -1 -2 -2 -2 y = 1 -1 -1 -1 -1 -1 -2 -2 -2 y = 1 -1 -1 -1 1 -1 -2 -2 -2 y = 1 -1 -1 -1 1 -1 -2 -2 3