I have string containing n elements.

I want to insert a automatically incremented number to the first position.

E.g Data

66,45,34,23,39,83
64,46,332,73,39,33 
54,76,32,23,96,42

I am spliting to string to array with split char ','

I want resultant array with a incremented number a first position

1,66,45,34,23,39,83
2,64,46,332,73,39,33
3,54,76,32,23,96,42

Please suggest how can I do it.

Thanks

Edit
Report