Calculating the sum of an array with decimal & hexadecimal elements.

[Jromero]

I need to add the sum of hex and decimal
right now is not adding anything

A5
165
A5
165A50
FAA
4010
FAA
4010FAA0
Here is my code

public class Numbers{
 
    public static int Numbers(String s) {
        String digits = "0123456789ABCDEF";
        s = s.toUpperCase();
        int val = 0;
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            int d = digits.indexOf(c);
            val = 16 * val + d;
        }
        return val;
    }
 
   public static String Numbers(int d) {
        String digits = "0123456789ABCDEF";
        if (d == 0) return "0";
        String hex = "";
        while (d > 0) {
            int digit = d % 16;                
            hex = digits.charAt(digit) + hex;  
            d = d / 16;
        }
        return hex;
    }
 
 
 
    public static void main(String[] args) {
      int sum = 0;
 
      for (int i = 0; i < args.length; i++) {
        System.out.println(args[i]);
 
      int decimal = Numbers(args[i]);
        System.out.println(decimal );
 
        String hex = Numbers(decimal);
        System.out.println(hex);
 
        System.out.println( decimal + hex + sum );
    }
}
}
 

[Ganon11]

Well, you haven't added a method to add anything. Think about how you'll do this: especially of concern is, how will you tell if a number is base 16 (hex) or base 10 (decimal)?

[JosAH]

I need to add the sum of hex and decimal
right now is not adding anything

It's ambiguous: does 42 the decimal number 42 or the hexadecimal representation
of the numer 66 (in decimal)?

kind regards,

Jos

[Jromero]

It's ambiguous: does 42 the decimal number 42 or the hexadecimal representation
of the numer 66 (in decimal)?

kind regards,

Jos

Here is my code

//LabAssignment2
//Jessica Romero -10-05-07
public class Numbers{
 
    public static int conv1(String s) {
        String digits = "0123456789ABCDEF";
        s = s.toUpperCase();
        int val = 0;
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            int d = digits.indexOf(c);
            val += d*Math.pow(16, s.length()-1-i);
        }
        return val;
    }
 
   public static String conv2(int d) {
        String digits = "0123456789ABCDEF";
        if (d == 0) return "0";
        String hex = "";
        while (d > 0) {
            int digit = d % 16;                
            hex = digits.charAt(digit) + hex;  
            d = d / 16;
        }
        return hex;
    }
 
 
 
    public static void main(String[] args) {
      int sum = 0;
 
      for (int i = 0; i < args.length; i++) {
        System.out.println(args[i]);
 
 
      int decimal = conv1(args[i]);
        System.out.println(decimal );
 
        String hex = conv2(decimal);
        System.out.println(hex);
 
 
 
    }
}
}

[Jromero]

Well, you haven't added a method to add anything. Think about how you'll do this: especially of concern is, how will you tell if a number is base 16 (hex) or base 10 (decimal)?

I have hard time with arrays can you please help me

 public static int conv1(String s) {
        String digits = "0123456789ABCDEF";
        s = s.toUpperCase();
        int val = 0;
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            int d = digits.indexOf(c);
            val += d*Math.pow(16, s.length()-1-i);

[Ganon11]

Yes, we can help you, but you haven't done anything to even try to add. Please take a look at our posting guidelines (click Help at the top of your screen, click Posting Guidelines, and read through all of them).

[pbmods]

Heya, Jessica.

Changed thread title to better describe the problem (did you know that threads whose titles do not follow the Posting Guidelines actually get FEWER responses?).

Please use CODE tags when posting source code:

[CODE=java]
Java code goes here.
[/CODE]

[JosAH]

Heya, Jessica.

Changed thread title to better describe the problem

If that is the correct topic title then all I can say is: read my reply #3 again.

kind regards,

Jos