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Do we have any Fucntion which can generate +1 and -1 randomly????

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A P S
A P S 2014-10-26
编辑： Mohammad Abouali 2014-10-26
I am using the following thing to generate it...
a=rand(1,10);
b=round(a);
b( b==0 )=-1;
So is there any other best way to genrate +1 and -1 randomly

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Mohammad Abouali
Mohammad Abouali 2014-10-26
编辑：Mohammad Abouali 2014-10-26
I don't think there is any function doing that.
Here is another approach:
sign(rand(1,10)-0.5)
or
(-1).^(round(rand(1,10)))

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