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  1. #1
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    numbers programming

    Hi,
    I've only just started java and I am trying to to make a program so that when a any line of digits are added it prints the count N for the numbers (how many numbers are in the line), the minumum and maximum of the line of numbers, their sum, and the average of all the numbers. Each of these specifications has to be printed on a new line.
    The program has a to be called NumberFor
    eg.
    >NumberFor 22.0 42.5 15.2 -2 6
    4
    -2
    42.5
    77.1
    19.275

    Currently I have:

    public class NumberFor {
    public static void main(String[] args) {

    double value = Double.parseDouble(args[0]);
    double sum = 0.0;

    //count N

    // first value read initialized min and max
    double max = StdIn.readDouble();
    double min = max;

    // read in the data, keep track of min and max
    {
    if (value > max) max = value;
    if (value < min) min = value;
    }

    System.out.println(+ min);
    System.out.println(+ max);

    // sum of values
    double N = Double.parseDouble(args[0]);
    for (double i = 0.0; i < N; i++) {
    sum += value;
    }

    System.out.println(+ sum);


    //average
    double cnt = 0;
    while (!StdIn.isEmpty()){
    sum += value;
    cnt ++;
    }
    double average = sum / cnt;
    System.out.println(+ average);
    }

    }

    and the only output i can get to work is the max

  • #2
    Supreme Master coder! Philip M's Avatar
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    This is the JavaScript forum. Java and Javascript are entirely different programming languages, in spite of the confusingly similar names. Rather like Austria and Australia! Ask a mod to move this thread to the right forum.

    All the code given in this post has been tested and is intended to address the question asked.
    Unless stated otherwise it is not just a demonstration.

  • #3
    God Emperor Fou-Lu's Avatar
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    This is a bit unusual; you are working off of input for the application command, but you do not appear to use any additional methods or object types. Casting and parsing isn't IMO something that should be learned before method handling.
    The trick here is to simply ensure you have a double[] or Double[] to work with.
    PHP Code:
            double[] dValues = new double[args.length];
            for (
    int i 0args.length; ++i)
            {
                
    dValues[i] = Double.parseDouble(args[i]);
            } 
    Simple as that. You now work with only dValues to collect the information about the count, max/min (easy via sorting a copy), average, sum, whatever you want.

    Also, in the future please use [php][/php] or [code][/code] tags as it preserves the formatting.


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