Cody

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

Solution 2020956

Submitted on 14 Nov 2019 by Jackson Cocks
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   Pass
x = 5; assert(isequal(unique(rand_plusminus1(x)),[-1;1]))

y = 2 1 1 2 1 2 1 2 1 2 1 2 2 1 2 1 1 1 1 1 2 1 1 1 2 y = -1 1 1 -1 1 -1 1 -1 1 -1 1 -1 -1 1 -1 1 1 1 1 1 -1 1 1 1 -1

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

y = 1 y = 1

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

y = []

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

y = Columns 1 through 30 2 2 1 2 2 1 2 2 1 2 2 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 2 1 1 2 2 2 1 1 1 1 1 1 2 1 2 1 2 2 1 1 2 1 2 2 1 1 1 2 2 1 2 1 2 2 2 1 1 2 2 1 2 1 2 1 2 1 1 1 1 2 2 2 2 2 1 1 2 2 1 2 2 2 2 1 1 1 2 2 2 1 1 2 2 1 1 2 1 1 1 1 1 1 1 2 2 1 2 2 1 1 2 2 2 2 1 1 2 2 2 1 2 1 1 2 2 1 1 1 2 2 2 2 1 2 1 1 1 2 2 1 2 2 1 1 2 1 1 1 2 1 2 1 2 2 1 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 2 1 2 1 2 2 1 2 1 1 1 1 1 2 2 2 1 1 2 1 2 2 1 2 2 1 1 1 2 1 1 2 2 2 1 2 2 1 1 2 1 1 1 1 2 1 1 1 2 1 1 2 1 1 1 2 1 2 2 2 1 2 2 1 1 1 1 2 1 1 2 1 2 1 1 2 1 2 1 1 2 1 2 2 2 1 1 2 2 2 1 2 2 2 1 1 2 1 1 1 1 1 1 2 1 2 1 1 2 2 1 2 1 2 1 1 1 1 1 1 2 2 2 2 2 1 1 2 2 1 1 2 1 2 2 2 1 2 1 1 1 1 2 2 1 2 1 1 1 2 2 1 1 2 2 1 1 2 2 1 2 2 2 2 1 2 2 1 2 1 2 1 2 2 1 2 2 2 1 1 1 1 1 2 2 1 2 1 2 2 1 2 2 1 1 1 1 2 1 2 2 2 1 2 2 1 2 1 2 1 2 2 2 1 2 2 2 1 2 1 1 2 2 2 1 2 2 2 1 1 1 1 2 2 2 1 2 1 2 2 1 1 1 1 2 1 2 2 1 2 2 2 2 2 2 1 1 1 2 2 1 2 1 1 2 2 2 1 1 2 1 2 1 1 1 1 1 2 1 1 1 1 1 2 1 1 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 2 1 1 2 1 2 1 2 2 1 2 1 1 1 1 2 2 1 1 2 1 1 2 1 1 2 2 2 2 2 2 2 2 1 2 1 2 2 1 1 1 1 1 2 2 1 1 1 2 1 1 1 2 1 1 2 1 1 2 1 1 2 1 2 1 1 2 1 1 1 2 2 2 2 2 1 2 2 2 1 1 1 2 2 2 2 2 2 1 1 1 2 1 1 2 1 2 2 1 2 2 2 1 1 1 1 1 1 1 2 1 1 2 2 2 2 1 1 2 1 2 2 2 2 1 1 2 2 2 2 1 2 2 1 2 2 1 2 2 1 1 2 2 2 1 1 2 1 2 2 2 2 2 2 2 1 2 2 2 1 2 1 2 2 1 2 1 1 1 2 1 2 1 1 1 2 1 1 2 1 1 2 1 2 2 2 2 1 1 1 2 2 2 1 2 1 1 2 1 1 2 2 1 1 1 2 1 1 1 1 2 1 1 2 2 2 2 2 1 1 2 1 1 1 1 2 1 1 2 2 2 1 1 2 1 1 1 2 1 2 2 1 1 2 2 1 2 1 1 1 2 1 1 1 2 2 2 2 2 1 1 2 1 1 1 1 2 2 2 1 2 1 1 1 1 1 2 2 1 1 2 2 2 1 2 2 2 2 1 2 2 1 1 2 1 1 2 2 2 2 1 2 2 2 2 2 2 1 2 1 1 1 1 1 2 2 1 2 1 2 1 1 2 2 2 2 1 1 1 1 2 1 2 1 2 2 2 2 2 1 1 1 2 1 1 2 2 1 1 2 1 1 2 2 2 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 2 1 2 2 2 2 1 1 2 2 2 1 2 1 1 1 1 1 2 1 2 2 1 1 1 2 2 1 2 2 1 2 1 1 1 1 1 2 1 2 1 1 2 2 1 1 1 1 1 2 1 1 1 1 1 2 2 2 1 1 2 2 1 2 2 1 2 2 1 1 2 2 1 2 2 1 2 1 1 2 1 2 1 1 2 1 1 1 2 2 2 1 2 2 1 1 2 2 1 1 2 1 1 1 1 1 2 2 1 2 2 2 2 2 2 2 2 1 2 1 2 1 1 2 1 2 1 2 1 1 1 2 2 1 1 2 2 1 1 2 2 1 2 1 2 2 1 2 2 1 2 2 2 1 1 2 2 1 2 2 2 1 1 1 1 2 2 1 1 1 2 2 1 1 1 1 2 1 2 1 1 1 1 1 2 2 1 1 2 1 2 2 1 1 2 1 1 2 2 1 2 2 2 1 2 2 2 2 1 1 2 1 1 2 2 1 1 2 2 1 1 2 1 2 2 2 1 2 2 1 1 2 1 2 2 1 1 2 2 2 1 2 2 2 1 2 2 2 2 1 2 1 2 1 1 1 1 2 1 1 1 2 2 1 1 2 1 1 2 1 1 2 2 1 1 2 2 2 1 2 1 1 2 1 2 1 2 1 2 1 2 2 2 2 2 1 2 1 1 2 2 2 1 1 2 1 1 2 1 2 1 2 1 1 1 2 2 1 1 1 1 1 2 2 2 1 1 1 1 1 2 1 1 2 2 2 2 1 1 2 2 1 2 1 2 1 1 1 1 2 1 2 1 1 1 1 2 2 1 2 2 2 1 1 2 2 1 1 2 2 1 2 1 1 1 2 1 2 2 1 1 1 2 1 2 1 2 1 2 2 2 2 1 2 1 1 1 2 2 1 1 1 1 2 1 1 2 1 1 1 1 1 1 2 1 1 2 1 2 1 2 2 1 2 2 2 2 2 2 2 1 2 2 1 1 2 2 2 1 1 2 2 1 1 1 2 1 2 1 1 1 2 1 1 2 2 2 1 2 1 1 1 1 2 1 1 1 1 2 1 2 1 2 1 2 1 2 2 2 1 1 2 2 2 2 1 1 2 1 2 1 1 2 1 1 1 1 1 1 2 2 1 2 2 1 1 2 1 2 1 1 2 1 2 1 2 1 2 1 1 1 1 1 2 2 2 2 1 2 1 1 2 1 2 2 2 2 2 2 1 2 2 1 2 1 1 1 2 2 2 1 2 2 1 2 1 1 2 1 2 1 2 2 2 2 1 2 2 1 1 1 1 1 2 2 1 2 2 1 1 1 2 1 2 1 2 1 1 1 1 1 2 2 1 2 1 1 2 2 1 2 2 2 2 2 1 1 1 1 1 1 2 2 1 1 2 1 2 1 2 2 1 1 1 2 1 1 2 1 1 2 1 2 1 1 1 2 1 2 2 2 2 1 1 2 1 2 2 2 2 1 2 2 2 1 1 1 2 2 1 1 2 1 2 2 1 1 1 2 1 1 1 2 2 1 2 1 2 1 2 2 1 2 2 2 1 1 2 1 1 1 1 2 1 2 1 1 2 1 1 1 1 2 1 1 2 2 1 1 2 1 2 1 1 1 1 2 2 1 2 2 2 1 2 2 2 1 1 2 1 2 1 1 2 1 2 1 1 2 1 1 1 1 1 1 2 1 2 1 1 1 1 2 2 1 1 1 2 1 2 1 1 2 1 2 2 1 1 2 2 2 1 1 1 1 2 2 1 1 1 2 2 1 1 1 1 ...