MATLAB: Separate the positive values from the negative values

Question

I have the following

X=[1  - 3  5  -8  4  9 -6  -3]

I want to separate the polarity ( positive values from the negative values) like this

Xp=[1 5 4 9]
Xn=[-3 -8 -6 -3]

then flip the negative values to positive values

like

Xn=[3 8 6 3]

then pass the values as a two-step

like

first, pass the positive step and the second pass the negative steps

NOTE : general methods

Answer 1

Xp=X(X>0)
Xn=X(X<0)
Xn=abs(Xn)