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package javaapplication6;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;

/**
 *
 * @author ZZaier
 */
public class JavaApplication6 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
       

        List<Integer> myList1 = new ArrayList(Arrays.asList(3, 15, 5, 78, 4, -111, 55, 5, 33));

        System.out.println("Sum is " + sumValue(myList1));
        System.out.println("max is " + maxValue(myList1));
        System.out.println("position even  is " + evenValue(myList1));
        System.out.println("negative is " + negativeValues(myList1));
        System.out.println("first  is " + searchLastValue(myList1, 5));
        System.out.println("last is " + searchFirstValue(myList1, 5));
        
        System.out.println("old list is " + myList1);
        System.out.println("new list is " + insertValueInList(myList1, 25, 5));

        List<Integer> myList2 = new ArrayList(Arrays.asList(3, 15, 15, 78, 114, 114, 114, 155, 225, 733, 733, 733));
        searchDoubleValue(myList2);

    }

    public static int sumValue(List<Integer> list) {

        //we don't initialize at 0 
        int sum = 0;

        for (int value : list) {
            sum += value;
        }

        return sum;

    }

    public static int maxValue(List<Integer> list) {

        
        int max = list.get(0);

        for (int i = 0; i < list.size(); i++) {
            if (max < list.get(i)) {
                max = list.get(i);
            }
        }
        return max;

    }

    public static int negativeValues(List<Integer> list) {

       
        int count = 0;

        for (int i = 0; i < list.size(); i++) {
            if (list.get(i) < 0) {
                count++;
            }
        }
        return count;

    }

    public static int evenValue(List<Integer> list) {


        int position = -1;

        for (int i = 0; i < list.size(); i++) {
            if (list.get(i) % 2 == 0) {
                position = i;
            }
        }
        return position;

    }

    public static int searchLastValue(List<Integer> list, int value) {


        int position = -1;

        for (int i = 0; i < list.size(); i++) {
            if (list.get(i) == value) {
                position = i;
            }
        }
        return position;

    }

    public static int searchFirstValue(List<Integer> list, int value) {

        int i = 0;

        while (i < list.size() && list.get(i) != value) {
            i++;
        }
        if (i < list.size()) {
            return i;
        } else {
            return -1;
        }

    }

    public static void searchDoubleValue(List<Integer> list) {
        for (int i = 0; i < list.size() - 1; i++) {
            if (Objects.equals(list.get(i), list.get(i + 1))) {
                System.out.println(list.get(i));
            }
        }
    }

    public static List<Integer>  insertValueInList(List<Integer> list, int value, int position) {
        
		// we don't want to use the add list function
        
        int theSize = list.size();
        
        if(position> theSize) {
            System.out.println("Position Out of bound");
            return list;
        }
        
        list.add(99);
        
        
        for (int i = theSize; i > position; i--) {
           list.set(i,list.get(i-1) );
        }
        
        
        list.set(position,value );
        
        
        return list;
    }

}