For eg:- my Arraylist is :-
**[S1 10 20 12, S2 11 21 13, S3 13 10 12]**
Thus i want to add extra element **(99)** in first place keeping previous ones as they were **[S1 10 20 12]**
My output should be [S1 10 20 12 **99**, S2 11 21 13, S3 13 10 12]