change a normal matrix to Coordinate matrix

between every lines,here is a blank line

for ex: 0 2 3 1 5 3 2 0 0 0 0 0 1 0 0 0 2 0 0 0

-->

row: 0 0 0 0 1 1 2 3

column: 1 2 3 4 0 1 2 1

values: 2 3 1 5 3 2 1 2