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Thread: Printing Array without printing empty elements

  1. #1
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    Default Printing Array without printing empty elements

    I have written a program that prints the contents of an array that are above a certain number (called average). It does this perfectly, but ti prints the empty elements as well (i.e. values of 0.0). How can I stop Java from printing the empty elements?

    Thanks.

    CODE:

    import java.util.Scanner;
    import java.util.Arrays;
     
    // Create PriceArray Class
    public class PriceArray
    {
     
    	// Create main Method
    	public static void main(String[] args)
    	{
    		// Create array to hold 5 prices, declare variables
    		double[] priceList = new double[5];
    		Scanner sc = new Scanner(System.in);
     
    		//  Get prices from the user and put them into the priceList array
    		System.out.println("Please enter a price: ");
    		int price;
    		for (price=0; price < priceList.length; ++price)
    		{
    			System.out.print("Price "+(price+1)+": ");
    			priceList[price] = sc.nextDouble();
    			if (priceList[price]<0)	
    			break;
    		}
    		System.out.println("Thank you!");
    		System.out.println("Total: " + sumArray(priceList));
    		System.out.println("Average: " + averageArray(priceList));
    		System.out.println("High Prices: " + formatList(highPrices(priceList, averageArray(priceList))));
     
    	}
    	// Create sumArray Method
    	public static double sumArray(double[] priceList)
    	{			
    		// Declare variables
    		double sum = 0;
     
    		//Calculate the um of the elements in the PriceList Array
    		for (int i = 0; i < priceList.length; i++)
    		{
    			sum += priceList[i];
    		}
    		return sum;
    	}
    	// Create averageArray Method
    	public static double averageArray(double[] priceList)
    	{
    		// Declare variables
    		double average = 0;
     
    		//Calculate the um of the elements in the PriceList Array
    		for (int i = 0; i < priceList.length; i++)
    		{
    			average += priceList[i] / priceList.length;
    		}
    		return average;
     
    	}	
    	// Create highPrices Method
       public static double[] highPrices(double[] priceList, double average)
       {
          average = averageArray(priceList);
          double[] highValues = new double[5];
          int j=0;
          for (int i=0; i < priceList.length; ++i)
             if (priceList[i] > average) highValues[j++]=priceList[i];
          return highValues;
       }
     
    		// Create formatList Method
    	public static String formatList(double[] priceList)
    	{
    		StringBuffer result = new StringBuffer();
    		for (int i=0; i < priceList.length; ++i)
    		{
    			if (i!=0) result.append(", ");
    			result.append(priceList[i]);
    		}
    		return result.toString();
    	}
     
     
     
     
    }


  2. #2
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    Default Re: Printing Array without printing empty elements

    Before printing, check if the value is not empty and 0.0?

    ---
    edit: I just noticed there is a [SOLVED] tag in front of this topic, does the code work now CarlMartin10?
    Last edited by Bryan; April 12th, 2010 at 07:08 AM.

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