package Week6_Lab;
import java.util.*;
public class lab6_LL {

    public static void main(String[]  args){
        LinkedList<Integer> ll = new LinkedList<Integer>();

        ll.add(1);
        ll.add(3);
        ll.add(5);
        ll.add(7);
        ll.add(9);
        ll.add(11);

        // Question 1
        System.out.print("Before adding: ");
        printLinkedList(ll);
        System.out.print("After adding and sorting: ");
        printLinkedList(addAndSort(ll, 10));

        // Question 2
        //System.out.print("Before swapping:");
        //printLinkedList(ll);
        System.out.print("After swapping:");
        swap(ll, 1, 6);
        printLinkedList(ll);

        //Question 3
        LinkedList<Integer> randInt = new LinkedList<Integer>();
        Random rand = new Random();
        System.out.println("The 500 random numbers generated are: ");
        for (int i = 0; i < 500; i++) {
            randInt.add(rand.nextInt(1000, 9999));
        }

        printLinkedList(randInt);

        int randomIntegerToSearch = rand.nextInt(1000, 9999);
        System.out.println("\nAnother random number generated is " + randomIntegerToSearch);

        int index = search(randInt, randomIntegerToSearch);
        System.out.println(index);
    }

    public static void printLinkedList(LinkedList<Integer> ll){
        System.out.print("[");
        for (Integer integer : ll) {
            if (Objects.equals(integer, ll.getLast())) {
                System.out.println(integer + "]");
                break;
            }
            System.out.print(integer + ", ");
        }
    }
    public static LinkedList<Integer> addAndSort(LinkedList<Integer> ll, int value){
        //ll.add(value);
        //Collections.sort(ll); This Works

        //Alternative is to loop through the list and insert the value at the correct index
        for (int i = 0; i < ll.size(); i++) {
            if (value < ll.get(i)) {
                ll.add(i, value);
                break;
            }
        }

    return ll;
    }

    public static void swap(LinkedList<Integer> ll, int indexOne, int indexTwo){
        int temp = ll.get(indexOne);
        ll.set(indexOne, ll.get(indexTwo));
        ll.set(indexTwo, temp);
    }

    public static int search(LinkedList<Integer> list, int searchVal){
        for (Integer integer : list) {
            if (integer == searchVal) {
                System.out.println("Found " + searchVal + " at index " + list.indexOf(integer));
                return list.indexOf(integer);
            }
        }
        return -1;
    }
}