Modify the existing ArrayLists's contents, by erasing the second element, then inserting $100$ and $102$ in the shown locations. Use ArrayList's remove$()$ and add$()$ only. Sample output of below program with input $101200103$ :

$100101102103$

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public static void main$($String $[]$ args$)\{$

Scanner scnr $=$ new Scanner$($

System.in$)$;

Arraylist$)=0$;$i<mi\; id="EditorElement\_69664">(</mi><mn\; id="EditorElement\_69646">3</mn>$;$++i\}$

userInput $=scnr.$ nextInt $()$ ;

$\{$