Complete the tuna method Zeros(). This method modifies the original list to add

Question

Complete the tuna method Zeros(). This method modifies the original list to add a new node (with the value 0) after every node in the original list. For example, if the list originally contains the values 1, 2, 3, 4, 5
in that order, after calling Zeros(), the list will contain the values
1, 0, 2, 0, 3, 0, 4, 0, 5, 0
Your solution must (eventually) modify the original list, and it should work with any list configuration (for
an empty list, just add a single node with the value 0).

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Explanation / Answer

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import java.util.ArrayList;

public class ZeroPadding {
   
    public void padWithZeros(ArrayList<Integer> mylist){
        if(mylist==null)
            return;
        int size = mylist.size();
        if(mylist.isEmpty()){
            mylist.add(0);
        }
        for(int i=1;i<=(2*size);i+=2){
            mylist.add(i, 0);
        }
    }
   
    public static void main(String[] args){
        ArrayList<Integer> list = new ArrayList<Integer>();
        list.add(1);
        list.add(2);
        list.add(3);
        new ZeroPadding().padWithZeros(list);
        for(Integer i : list){
            System.out.println(i.intValue());
        }
    }   
   
   
}

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