Can anyone help me with this gatting wrong output

Question

import java.util.*;

public class Deletenode {
public static void main(String args[]) {
LinkedList<Integer> list = new LinkedList<>();
list.add(45);
list.add(32);
list.add(18);
list.add(12);
list.add(10);
list.add(3);
for (int i = 0; i < list.size(); i++) {
if (list.get(i) > 15) {
list.remove(i);
}
}
System.out.println(list);
}
}

output-->[32, 12, 10, 3]
here should not be 32 then why is it on LinkedList

Answer 1

The problem is that you cha gr the list length while iterating over the list:

– on the 1st iteration you remove 45, not the element 32 is at index 0
– on the 2nd iteration, i = 1, the list is [32, 18, 12, 10, 3]. So 18 is removed at index 1

It is not recommended to change the length of a list while iterating it.