Sorry to bug u all again and again

Question

But sololearn is the only plateform i trust to clear my doubts.
The error says-
Objects cannot be converted to Integer
Thank you in advance.
https://code.sololearn.com/c5fvDv0E8GfH/?ref=app
How to remove the error

Answer 1

Again as yesterday, you haven't provided any types to the Lists
And when you have multiple types of data to be passed you can use Object
as well, you can create custom Object which can take multiple type of values.
https://code.sololearn.com/c6o8506RFqq5/?ref=app

Answer 2

Done

Answer 3

list.add(0, new Object()); by this, what are trying stephen haokip ?
List you declared as Integer type so it can add only Integer values.. If you trying to do so add like
list.add(0, i); // i an example... Instead of that line add this.