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Thread: Trying to sort the values of a two dimensional array in ascending order.

  1. #1
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    Default Trying to sort the values of a two dimensional array in ascending order.

    Right now, the program is determining and outputting the medal standings in descending order, however, I would like to determine and output the medal standings in ascending order. I'm not sure how to change my program in order to accomplish this task, if anyone is able to guide me onto the right path, that would be much appreciated.
    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
    public class OlympicMedals2D {
    public static void main (String [] args) {

    // Initializing variables.

    String country[] = {"Norway", "Germany", "Canada", "United States", "Netherlands", "South Korea", "Russia", "Switzerland", "France", "Sweden", "Austria", "Japan", "Italy", "China", "Czech Republic", "Finland", "Britain", "Belarus", "Slovakia", "Australia", "Poland", "Slovenia", "Spain", "New Zealand", "Hungary", "Ukraine", "Belgium", "Kazakhstan", "Latvia", "Liechtenstein"};
    String countryMostTotalMedals = null;
    String countryMostGoldMedals = null;
    String countryMostSilverMedals = null;
    String countryMostBronzeMedals = null;
    int medals[][] = {{14, 14, 11}, {14, 10, 7}, {11, 8, 10}, {9, 8, 6}, {8, 6, 6}, {5, 8, 4}, {2, 6, 9}, {5, 6, 4}, {5, 4, 1}, {7, 6, 1}, {5, 3, 6}, {4, 5, 4}, {3, 2, 5}, {1, 6, 2}, {2, 2, 3}, {1, 1, 4}, {1, 0, 4}, {2, 1, 0}, {1, 2, 0}, {0, 2, 1}, {1, 0, 1}, {0, 1, 1}, {0, 0, 2}, {0, 0, 2}, {1, 0, 0}, {1, 0, 0}, {0, 1, 0}, {0, 0, 1}, {0, 0, 1}, {0, 0, 1}};
    int totalMedals[] = new int [medals.length];
    int mostTotalMedals = 0;
    int greatestTotalMedals = 0;
    int mostGoldMedals = 0;
    int mostSilverMedals = 0;
    int mostBronzeMedals = 0;
    int medalCounter = 0;
    int row;
    int column;

    // Determining country with highest total, gold, silver, and bronze medal count.

    for (row = 0; row < medals.length; row += 1) {

    for (column = 0; column < medals[row].length; column += 1) {

    totalMedals[row] = totalMedals[row] + medals[row][column];

    if (mostGoldMedals < medals[row][0]) {
    mostGoldMedals = medals[row][0];
    countryMostGoldMedals = country[row];
    }
    if (mostSilverMedals < medals[row][1]) {
    mostSilverMedals = medals[row][1];
    countryMostSilverMedals = country[row];
    }
    if (mostBronzeMedals < medals[row][2]) {
    mostBronzeMedals = medals[row][2];
    countryMostBronzeMedals = country[row];
    }
    }

    if (mostTotalMedals < totalMedals[row]) {
    mostTotalMedals = totalMedals[row];
    countryMostTotalMedals = country[row];
    }
    }

    // Outputting country with highest total, gold, silver, and bronze medal count.

    System.out.println("The country with the most total medals is " + countryMostTotalMedals + " with " + mostTotalMedals + ".");
    System.out.println("The country with the most gold medals is " + countryMostGoldMedals + " with " + mostGoldMedals + ".");
    System.out.println("The country with the most silver medals is " + countryMostSilverMedals + " with " + mostSilverMedals + ".");
    System.out.println("The country with the most bronze medals is " + countryMostBronzeMedals + " with " + mostBronzeMedals + ".");
    System.out.println("\nMedal Standings");

    // Determining medal standings in descending order (I would like to be able to determine the medal standings in ascending order).

    for (row = 0; row < medals.length; row += 1) {

    for (column = 0; column < medals.length; column += 1) {

    if (totalMedals[column] > greatestTotalMedals) {
    greatestTotalMedals = totalMedals[column];
    medalCounter = column;
    }
    }

    // Outputting medal standings in descending order (I would like to be able to output the medal standings in ascending order).

    System.out.println(country[medalCounter] + "\t" + totalMedals[medalCounter]);

    totalMedals[medalCounter] = 0;
    medalCounter = 0;
    greatestTotalMedals = 0;
    medalCounter = 0;
    }
    }
    }
    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
    Last edited by SirPaco; October 25th, 2018 at 01:58 PM.

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    Default Re: Trying to sort the values of a two dimensional array in ascending order.

    You're not really sorting anything. For a simple sort try Googling - bubble sort. Wiki would be a good place to look. And write a small test program before you incorporate it into your main program (just to ensure you understand how it works).


    And instead of working with several multi-dimensional arrays, I would recommend to create a class which accepts the country and the medals won in the constructor. That way, you won't mess things up if you change the order of the countries but not the medals (as you have it now).

    Regards,
    Jim
    Last edited by jim829; October 25th, 2018 at 09:51 AM.

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    Default Re: Trying to sort the values of a two dimensional array in ascending order.

    I edited my post and I am now determining the descending order of the medal standings. If you are able to, it would be very helpful if you help me determine the ascending order of the medal standings instead.

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    Default Re: Trying to sort the values of a two dimensional array in ascending order.

    Help.

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    Default Re: Trying to sort the values of a two dimensional array in ascending order.

    Can you post the program's output to show us what you are talking about?
    Also post an example of correct output.

    Please describe What values are in the metals array?

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

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