Java Question Write a Static method that accepts a List<T> argument. It should r

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Java Question
Write a Static method that accepts a List<T> argument. It should return the number in the list that are equal to the element that comes before it.use only iterators to inspect the list. Do not use for loops or the get() method Java Question
Write a Static method that accepts a List<T> argument. It should return the number in the list that are equal to the element that comes before it.use only iterators to inspect the list. Do not use for loops or the get() method Java Question
Write a Static method that accepts a List<T> argument. It should return the number in the list that are equal to the element that comes before it.use only iterators to inspect the list. Do not use for loops or the get() method

Explanation / Answer

Solution:

package com.chegg.nancy.solution;

import java.util.ArrayList;
import java.util.List;
import java.util.ListIterator;

public class Main {

   @SuppressWarnings({ "rawtypes", "unchecked" })
   public static <T> void main(String[] args) {

       List list = new ArrayList<T>();
       list.add(1);
       list.add(1);
       list.add(2);
       list.add(3);
       list.add(3);
       list.add(4);
       list.add(5);
       list.add(5);

       try {
           calStaticMethod(list);
       } catch (Exception e) {
           e.printStackTrace();
           System.out.println("Error!");
       } finally {
           System.out.println("Program Exited");
       }
   }

   @SuppressWarnings("rawtypes")
   private static void calStaticMethod(List list) {
       ListIterator itr = list.listIterator();
       while (itr.hasNext()) {

           int ele1 = (int) itr.next();
           int ele2 = (int) itr.next();
           if (ele1 == ele2)
               System.out.println(ele1 + " ," + ele2);
           if (itr.hasNext() == false)
               break;
           itr.previous();

       }

   }
}

Output:

1 ,1
3 ,3
5 ,5
Program Exited

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