Cody

# Problem 1227. Generate a random matrix A of (1,-1)

Solution 3321158

Submitted on 22 Oct 2020
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### Test Suite

Test Status Code Input and Output
1   Fail
x = 5; assert(isequal(unique(rand_plusminus1(x)),[-1;1]))

Unrecognized function or variable 'n'. Error in rand_plusminus1 (line 2) if n<1 Error in Test1 (line 2) assert(isequal(unique(rand_plusminus1(x)),[-1;1]))

2   Fail
x = 1; assert(isequal(abs(rand_plusminus1(x)),1))

Unrecognized function or variable 'n'. Error in rand_plusminus1 (line 2) if n<1 Error in Test2 (line 2) assert(isequal(abs(rand_plusminus1(x)),1))

3   Fail
x = 0; assert(isequal(rand_plusminus1(x),[]))

Unrecognized function or variable 'n'. Error in rand_plusminus1 (line 2) if n<1 Error in Test3 (line 2) assert(isequal(rand_plusminus1(x),[]))

4   Fail
x = 999; assert(isequal(unique(rand_plusminus1(x)),[-1;1]))

Unrecognized function or variable 'n'. Error in rand_plusminus1 (line 2) if n<1 Error in Test4 (line 2) assert(isequal(unique(rand_plusminus1(x)),[-1;1]))

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