Python: moving all elements greater than 0 to left and right in numpy array

If I have an numpy array like the one below, how can I right justify or left justify the elements tat are greater than zero

[[ 0.  5.  0.  2.]
 [ 0.  0.  3.  2.]
 [ 0.  0.  0.  0.]
 [ 2.  0.  0.  1.]]

for example, If I wanted to right justify this array, it would look like:

[[ 5.  2.  0.  0.]
 [ 3.  2.  0.  0.]
 [ 0.  0.  0.  0.]
 [ 2.  1.  0.  0.]]