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

Solution 1134317

Submitted on 6 Mar 2017 by Tyler Johnson

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Test	Status	Code Input and Output
1	Pass	x = 5; assert(isequal(unique(rand_plusminus1(x)),[-1;1]))
2	Pass	x = 1; assert(isequal(abs(rand_plusminus1(x)),1))
3	Pass	x = 0; assert(isequal(rand_plusminus1(x),[]))
4	Pass	x = 999; assert(isequal(unique(rand_plusminus1(x)),[-1;1]))

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