My table looks like this with duplicates in col1

col1,      col2,      col3,      col4
1,            1,            0,            a
1,            2,            1,            a
1,            3,            1,            a
2,            4,            1,            b
3,            5,            0,            c  

I want to select distinct col1 with max (col3) and min(col2); so result set will be:

col1,      col2,      col3,      col4
1,            2,            1,            a
2,            4,            1,            b
3,            5,            0,            c

I have a solution but looking for best ideas?