Finding math.min/max and total

[jrandaz]

I am working on a project for my java class and got stumped on a few questions. I am requesting guidance on figuring out the math.min, math.max and total of scores. Should I be creating a method and calling it to find the max, min, and total or should they be included in getScoreWithinRange?

// import necessary packages
import java.util.Scanner;

// class declaration
public class ProjectApp
{

    // main method declaration
    public static void main(String[] args)
    {
		// start of while loop
		String choice = "y";
		while (choice.equalsIgnoreCase("y"))
		{
			// create scanner
			Scanner sc = new Scanner(System.in);
			int testNumber = getTestNumberWithinRange(sc, "How many scores would you like to enter? ",
			6, 10);
			double score = getScoreWithinRange(sc, 1, 10, testNumber);



		}
	}

	public static int getTestNumber(Scanner sc, String prompt)
	{
		int testNumber = 0;
		boolean isValid = false;
		while (isValid == false)
		{
			System.out.print(prompt);
			if (sc.hasNextInt())
			{
				testNumber = sc.nextInt();
				isValid = true;
			}
			else
			{
				System.out.println("Error! Invalid number. Try Again.");
			}
			sc.nextLine();
		}
		return testNumber;
	}
	public static int getTestNumberWithinRange(Scanner sc, String prompt,
	int min, int max)
	{
		int testNumber = 0;
		boolean isValid = false;
		while (isValid == false)
		{
			testNumber = getTestNumber(sc, prompt);
			if (testNumber < min)
			{
				System.out.println("Error! Number must be greater than " + min + ".");
			}
			else if (testNumber > max)
			{
				System.out.println("Error! Number must be less than " + max + ".");
			}
			else
				isValid = true;
		}
		return testNumber;
	}

	public static double getScore(Scanner sc, String prompt)
		{
			double score = 0;
			boolean isValid = false;
			while (isValid == false)
			{
				System.out.println(prompt);
				if (sc.hasNextDouble())
				{
					score = sc.nextDouble();
					isValid = true;
				}
				else
				{
					System.out.println("Error! Invalid number. Try Again.");
				}
				sc.nextLine();
			}
			return score;
		}
	public static double getScoreWithinRange(Scanner sc, double min, double max, int testNumber)
	{
		double score = 0;
		boolean isValid = false;
		while (isValid == false)
		{
			for (int i = 1; i <= testNumber; i++)
			{
				System.out.print("Enter score #" + i + ": ");
				score = sc.nextDouble();

				
				if (score <= max && score >= min)
				{
					isValid = true;

				}
				else if (score >= max)
				{
					System.out.println("Error! Number must be 10.00 or less");
						i--;
				}
				else if (score <= min)
				{
					System.out.println("Error! Number must be 1.00 or more");
					i--;
				}
			}
		}
		return score;
	}


} // end class

[Junky]

Generally you would write a method to do one thing only. So you could write separate method s to do each task. However, in this case you can determine the max and min as each value is read in. Read in a new value and compare it to the old max value. If the new value is higher make it the max value.

[DarrylBurke]

Heyyy the Grand Poobah's back! Where've you been, Junky?

db