Java. I have class ScoreBoard that holds a 2d array of each player's score. COde Bellow

Example:

Using the method ScoreIterator so that it returns anonymous object of type ScoreIterator , iterate over all the scores, one by one. Use the next() and hasNext()

public interface ScoreIterator {
    int next();
    boolean hasNext();

Class ScoreBoard :

import java.util.*;

public class ScoreBoard {
    int[][] scores ;

    public ScoreBoard (int numOfPlayers, int numOfRounds) {
        scores = new int[numOfPlayers][numOfRounds];
        Random rand = new Random();
        for (int i = 0; i < numOfPlayers; i++) {
            for (int j = 0; j < numOfRounds; j++) {
                scores [i][j] = 50 + rand.nextInt(51);
            }
        }
    }

    public ScoreIterator scoreIterator () {
        // return anonymous object of type ScoreIterator 

        
    }

    public static void main(String[] args) {
        ScoreBoard sb = new ScoreBoard (3, 2);
        ScoreIterator iterator = sb.ScoreIterator ();
        while (iterator.hasNext()) {
            System.out.println(iterator.next());
        }
    }
}

}

I want to print out the array as well as its intersection, and also it doesn't show the time elapsed after 100,000

Missing is: 1,000,000 and 10,000,000

import java.util.Random;
import java.util.HashSet;
import java.util.Arrays;

public class array_intersect {

public static void main(String[] args)
{
for(int i=1000; i <= 10000000; i= i*10)
{
Integer[] array1 = generate_random_array(i);
Integer[] array2 = generate_random_array(i);

long startTime = System.nanoTime();
get_intersection(array1, array2);
long stopTime = System.nanoTime();
long elapsedTime = stopTime - startTime;
System.out.println("Time elapsed for dataset of " + i + " points : "+ elapsedTime + " in nanoseconds");

}
}

public static Integer[] generate_random_array(int size)
{
Random rand = new Random();
Integer[] return_array = new Integer[size];
for(int i=0;i< size ; i ++)
{
return_array[i] = rand.nextInt(size);
}
return return_array;
}

public static Integer[] get_intersection(Integer[] array1, Integer[] array2)
{
HashSet<Integer> set = new HashSet<>();
set.addAll(Arrays.asList(array1));
set.retainAll(Arrays.asList(array2));

Integer[] intersection = {};
intersection = set.toArray(intersection);

return intersection;

}

}

Find the regression​ equation, letting the first variable be the predictor​ (x) variable. Find the best predicted Nobel Laureate rate for a country that has 78.1.

Internet users per 100 people. How does it compare to the​ country's actual Nobel Laureate rate of 1.6 per 10 million​ people?

Find the equation of the regression line.

Y^= _____ + ______x.

​(Round the constant to one decimal place as needed. Round the coefficient to three decimal places as​ needed.)

The best predicted number of Nobel Laureates when the number of internet users per 100 is 79.9 is _________.

(Round to one decimal place as needed).

F Question 1: Evaluating investment projects

You are planning to invest $75,000 in new equipment. This investment will generate net cash flows of $45,000 a year for the next 2 years. The salvage value after 2 years is zero. The cost of capital is 25% a year.

a) Compute the net present value
NPV = $
Enter negative numbers with a minus sign, i.e., -100 not ($100) or (100).
Should you invest? Why?
YES -- the NPV is positive, which indicates that the investment is profitable
YES -- the NPV is negative, which indicates that the investment will reduce costs    
NO -- the NPV is negative, which indicates that the investment is unprofitable


b) Compute the payback period.
payback period = years

c) Compute the accounting rate of return (ARR).
To compute ARR, first compute:
   annual depreciation=$
   annual income=$
   average investment=$
ARR = %


d) Which of the three methods in (a)-(c) should you use in real life?
NPV only
payback method only    
ARR only
always use all three methods to reach the best decision

SecuriCorp operates a fleet of armored cars that make scheduled pickups and deliveries in the Los Angeles area. The company is implementing an activity-based costing system that has four activity cost pools: Travel, Pickup and Delivery, Customer Service, and Other. The activity measures are miles for the Travel cost pool, number of pickups and deliveries for the Pickup and Delivery cost pool, and number of customers for the Customer Service cost pool. The Other cost pool has no activity measure because it is an organization-sustaining activity. The following costs will be assigned using the activity-based costing system:

The distribution of resource consumption across the activity cost pools is as follows:

Required:

Complete the first stage allocations of costs to activity cost pools.

SecuriCorp operates a fleet of armored cars that make scheduled pickups and deliveries in the Los Angeles area. The company is implementing an activity-based costing system that has four activity cost pools: Travel, Pickup and Delivery, Customer Service, and Other. The activity measures are miles for the Travel cost pool, number of pickups and deliveries for the Pickup and Delivery cost pool, and number of customers for the Customer Service cost pool. The Other cost pool has no activity measure because it is an organization-sustaining activity. The following costs will be assigned using the activity-based costing system:

The distribution of resource consumption across the activity cost pools is as follows:

Required:

Complete the first stage allocations of costs to activity cost pools.

SecuriCorp operates a fleet of armored cars that make scheduled pickups and deliveries in the Los Angeles area. The company is implementing an activity-based costing system that has four activity cost pools: Travel, Pickup and Delivery, Customer Service, and Other. The activity measures are miles for the Travel cost pool, number of pickups and deliveries for the Pickup and Delivery cost pool, and number of customers for the Customer Service cost pool. The Other cost pool has no activity measure because it is an organization-sustaining activity. The following costs will be assigned using the activity-based costing system:

The distribution of resource consumption across the activity cost pools is as follows:

Required:

Complete the first stage allocations of costs to activity cost pools.

SecuriCorp operates a fleet of armored cars that make scheduled pickups and deliveries in the Los Angeles area. The company is implementing an activity-based costing system that has four activity cost pools: Travel, Pickup and Delivery, Customer Service, and Other. The activity measures are miles for the Travel cost pool, number of pickups and deliveries for the Pickup and Delivery cost pool, and number of customers for the Customer Service cost pool. The Other cost pool has no activity measure because it is an organization-sustaining activity. The following costs will be assigned using the activity-based costing system:

The distribution of resource consumption across the activity cost pools is as follows:

Required:

Complete the first stage allocations of costs to activity cost pools.

compute the statement of cash flows -- compute the amount of cash from operating activities, cash from investing activities, and cash from financing activities.

INCOME STATEMENT, 2018

BALANCE SHEETS

CURRENT PRICE/SHARE = $10

This company uses a perpetual inventory system. It had the following beginning inventory and current year purchases of its product.

Jan 1. Beginning Inventory ..... 50 units @ $100 = $5,000

Jan 14. Purchase .......................150 units @ $120 = 18,000

Apr 30. Purchase........................ 200 units @ $150= 30,000

Sept 26th. Purchase................... 300 units @ $200= 60,000

The company transacted sales on the following dates at $350 per unit sales price.

Jan 10. 30 units (specific cost: 30 @ $100)

Feb 15. 100 units (specific cost: 100 @ $120)

Oct 5. 350 units (specific cost: 100 @ $150 and 250 @ $200)

USING (THE WEIGHTED AVERAGE COSTING METHOD) ANSWER THE FOLLOWING QUESTIONS:

A. Identify and compute the costs to assign to the units sold. (Round per unit costs to three decimals.)

B. Identify and compute the costs to assign to the units in ending inventory. (Round inventory balances toe the dollar)

C. How likely is it that the Weighted Average method will reflect the actual physical flow of goods? How relevant is that factor in determining wether this is an acceptable method to use?

D. What is the impact of this method versus others in determining net income and income taxes?

E. How closely does the ending inventory amount reflect replacement cost?