find minimum non-zero

[shivax]

hi, look that:
a=
 1   0   0   8   7   0   0   2
 0   0   0   0   0   0   0   0
 2   0   0   6   0   0   1   0

i want find vector with minimun non-zero


and: 1 (minimun non-zero in  rows n.1)
        0 ( don't find minimum non-zero in  rows n.2)
        2 (minimun non-zero  in  rows n.3)

it's possible to code it avoing loop?





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