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package JavaCollection; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.Scanner; public class NumberList { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println("Enter the size of list"); int n = scanner.nextInt(); System.out.println("Enter the elements of list"); List<Integer> list = new ArrayList<>(); for (int i = 0; i < n; i++) { list.add(scanner.nextInt()); } System.out.println("List before updation:" + list); System.out.println("Insert : Enter the index and element"); int index = scanner.nextInt(); int insertElement = scanner.nextInt(); if (index >= 0 && index <= list.size()) { list.add(index, insertElement); } else { System.out.println("Index is not present in list"); } System.out.println("Delete : Enter the index"); int deleteIndex = scanner.nextInt(); if (index >= 0 && index <= list.size()) { list.remove(deleteIndex); } else { System.out.println("Element is not present in list"); } System.out.println("List after updation:" + list); } }
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