Cody

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

Solution 1846167

Submitted on 11 Jun 2019
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

### Test Suite

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

y = 1 1 1 0 1 0 0 0 1 1 0 0 0 1 1 1 0 0 1 0 1 1 1 1 0

Assertion failed.

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

y = 0

Assertion failed.

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

y = []

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

y = Columns 1 through 30 0 0 0 1 1 1 0 0 0 1 1 0 1 1 1 0 1 1 0 1 1 0 1 0 0 1 0 0 0 1 0 1 1 1 1 1 1 0 0 0 0 0 1 0 0 1 1 1 1 0 1 0 0 0 1 1 1 0 0 0 0 0 1 1 1 1 0 1 1 0 0 0 1 1 0 0 0 1 1 0 0 1 1 1 1 1 0 0 0 1 0 1 1 1 1 1 1 1 1 1 0 1 0 0 0 1 1 0 0 0 0 0 1 1 0 1 1 0 0 1 0 1 0 1 1 0 1 1 1 1 1 0 1 1 0 1 0 1 0 0 0 1 0 0 1 1 0 1 1 1 1 1 1 0 1 0 0 1 1 1 0 0 1 1 0 1 1 1 0 1 0 1 1 1 1 0 0 1 1 0 0 0 0 1 1 0 0 1 0 1 0 0 0 0 1 0 1 1 1 1 0 1 0 0 0 1 0 1 1 1 0 0 0 0 1 1 1 0 1 1 1 1 0 0 1 0 1 1 1 1 0 1 0 0 0 1 0 0 1 0 0 1 1 1 1 0 0 1 1 1 1 1 0 1 0 0 0 1 1 0 0 1 1 0 0 0 1 0 0 1 1 1 1 1 1 0 0 1 0 1 0 1 0 1 0 0 1 1 1 1 1 0 1 1 0 1 1 0 1 1 1 1 0 1 0 1 1 1 1 1 0 0 0 1 1 0 1 1 1 0 1 0 0 1 1 0 1 1 0 0 0 0 0 1 1 1 0 1 0 0 1 0 0 0 0 1 1 0 0 0 1 0 0 1 1 1 0 0 1 1 0 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 1 1 0 0 0 1 1 1 0 1 1 0 1 0 1 0 0 1 1 1 0 1 0 1 1 0 1 1 1 1 1 0 0 1 1 1 1 1 1 1 0 0 1 0 1 1 0 1 1 0 0 1 1 1 0 1 0 1 1 0 0 0 0 1 0 0 0 0 0 0 1 1 0 0 1 1 0 1 1 0 0 1 0 0 0 0 1 1 1 0 1 0 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 0 1 1 1 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 0 0 1 0 1 1 0 0 0 1 0 0 1 1 1 1 1 0 0 1 1 1 1 1 1 0 0 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 0 1 1 1 0 1 0 1 1 1 1 0 0 1 1 1 0 1 0 1 1 1 1 1 0 0 1 1 0 0 0 0 1 0 1 1 0 0 0 1 1 1 1 0 0 0 1 1 1 0 1 0 0 1 1 1 1 0 1 0 1 1 1 1 0 1 0 1 1 1 1 1 1 0 0 0 1 0 1 1 0 0 0 0 1 1 1 1 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 0 1 1 1 0 1 1 1 1 1 1 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 1 0 1 1 0 1 1 0 1 0 0 0 0 1 0 1 0 1 1 1 1 1 0 0 0 0 0 1 1 1 0 1 1 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 0 0 0 0 0 1 1 1 0 0 0 0 1 1 0 0 1 1 0 1 0 0 0 0 1 0 0 1 1 1 1 0 1 0 0 0 1 1 0 0 0 0 1 1 1 0 1 1 0 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1 1 0 0 0 0 1 1 1 1 0 0 0 1 0 1 0 0 1 1 1 1 0 0 1 0 1 1 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 1 0 0 0 1 0 1 0 0 1 1 1 0 0 0 1 0 0 1 1 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 1 0 0 0 0 1 1 0 1 0 0 1 1 1 1 0 1 1 0 1 1 1 0 1 1 1 0 1 0 0 1 0 0 1 1 1 1 1 0 0 0 0 0 1 1 0 1 0 1 0 0 0 1 1 1 1 1 0 1 1 0 0 1 0 0 1 0 0 1 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 1 0 1 0 0 1 0 0 1 1 0 1 0 1 0 1 1 0 0 0 1 1 0 0 1 0 0 0 1 0 1 0 0 1 0 1 0 0 1 1 1 1 1 0 0 1 1 1 0 1 0 1 0 1 0 0 1 0 0 1 1 0 0 1 1 0 0 0 1 1 0 0 1 1 1 0 0 1 1 0 0 0 0 1 1 0 0 1 1 1 0 1 1 1 1 0 0 1 0 1 0 1 0 1 1 1 1 0 1 1 1 1 1 0 0 1 0 1 1 1 0 0 0 0 1 0 0 0 0 1 1 1 0 0 0 0 1 1 0 0 1 1 1 0 0 0 1 1 1 1 0 1 0 0 1 0 0 0 1 0 1 1 1 0 0 0 1 0 0 0 1 1 1 0 0 0 0 0 1 1 1 0 1 1 1 0 1 1 1 0 0 1 0 0 0 1 1 0 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 0 1 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 0 1 0 1 0 0 1 0 0 1 0 1 0 0 0 0 1 1 0 1 0 0 0 1 1 1 1 0 0 1 0 0 0 0 1 1 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 1 0 0 0 1 1 0 1 0 0 1 0 0 1 0 1 1 0 1 1 1 0 1 0 0 0 0 1 0 1 0 1 0 1 0 1 1 0 1 1 1 1 0 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 1 1 1 0 1 1 0 0 0 1 1 1 0 0 0 1 0 1 1 0 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 1 0 1 0 1 0 1 0 0 1 0 0 1 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 1 1 0 0 0 1 1 1 1 1 1 0 1 0 1 0 0 1 1 1 1 0 0 0 1 1 1 0 0 0 0 1 1 0 1 0 0 0 1 1 1 1 0 1 1 1 1 0 0 0 1 1 1 0 1 1 1 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 0 1 0 1 1 0 1 0 1 0 1 1 1 1 1 1 0 1 0 1 0 1 1 0 0 1 0 0 1 0 1 1 1 1 1 0 1 0 0 1 1 1 0 0 1 1 1 0 1 0 0 0 0 1 0 0 1 0 1 1 0 1 1 0 1 0 0 0 0 0 1 1 0 0 1 0 0 1 0 1 1 1 0 1 0 0 0 0 1 0 1 1 0 0 0 0 0 1 0 1 1 0 0 1 1 1 0 0 1 1 0 1 0 1 1 0 1 1 1 0 0 1 0 0 1 0 1 1 0 0 0 0 1 0 1 1 0 0 1 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 0 0 1 1 1 1 1 1 1 0 1 0 0 0 0 0 ...

Assertion failed.