fillin array with letters from a to Z and numbers

sajid · April 27th, 2005, 07:11 AM

hi,

I have an array that i need to fill with all characters from A to Z and also numbers from 1 to 9 ... how can i do this?

Offcourse there is a way to write down each of 36 manually or use a for loop! ... but i m looking for a shortcut if anybody knows ... like in ada, it shud be something like this:

type IntTest is array (A..Z) of character;

is there anything like (A..Z) or (1..2) in C# ?

Thx

Prashant.k.m · April 27th, 2005, 07:17 AM

This may not be a real solution to the question.

Any how without loop it is possible in one line

char[] arr = ("a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p...").Split();

Prashant.k.m · April 27th, 2005, 07:29 AM

I also used a still smaller one -> char[] arr = ("ABCD...").ToCharArray

sajid · April 27th, 2005, 08:31 AM

isnt there anything like in ada? :

type IntTest is array (A..Z) of character;

this will include all 26 characters from A to Z

planoie · April 27th, 2005, 10:47 AM

What is ada?

sajid · April 27th, 2005, 11:57 AM

lolz ... ada is the name of a programming language ... like pascal, c++, etc

jacob · April 29th, 2005, 11:33 AM

Why don't you just loop through the char values and put them in the array?

Jacob.

jacob · April 29th, 2005, 12:08 PM

The code underneath will give you the an ArrayList of what you want. As you can see in the main method... you can both give the ASCII value or the char values. It is trivial to convert if you insist on using an array...

Code:

    class SomeClass
    {
        [STAThread]
        static void Main(string[] args)
        {
            ArrayList list = null;

            FillChars('0', '9', (list = new ArrayList()));
            FillChars('A', 'Z', list);
            FillChars('a', 'z', list);

            foreach(char c in list)
                Console.Write(c);
            Console.WriteLine();

            FillChars(48,  57, (list = new ArrayList()));
            FillChars(65,  90, list);
            FillChars(97, 122, list);

            foreach(char c in list)
                Console.Write(c);
            Console.WriteLine();
        }

        private static void FillChars(int start, int end, ArrayList chars)
        {
            int size = end - start + 1;
            if(size > 0)
                for(int i = 0, j = start; i < size; i++, j++)
                    chars.Add(Convert.ToChar(j));
        }

        private static void FillChars(char start, char end, ArrayList chars)
        {
            FillChars(Convert.ToInt32(start), Convert.ToInt32(end), chars);
        }
    }

Thats another solutions.

Jacob.

mehdi62b · April 30th, 2005, 02:37 PM

Jacob,I OP wanted to put integers and chars in its collection
IMO it's better to have a class like below,

Code:

    public class Items
    {
        IList m_items=new ArrayList(0);
        private Items(int start,int end)
        {
            for(int i=start;i<=end;i++)
                m_items.Add(i);
        }
        private Items(char start,char end)
        {
            for(char c=start;c<=end;c++)
                m_items.Add(c);
        }
        public static IList GetItems(int start,int end)
        {
            Items temp=new Items(start,end);
            return temp.m_items;
        }
        public static IList GetItems(char start,char end)
        {
            Items temp=new Items(start,end);
            return temp.m_items;
        }
    }

_____________
Mehdi.
software student.

jacob · May 2nd, 2005, 07:09 PM

Yep, lots of ways. I sometimes prefer to have these small static methods.

I would like to see how you fill the ArrayList (Items) with the values from the example? How do you merge the three ILists which you get out of the example, in an easy way (three intervals in the same list)? And BTW it seems like you put integers into the list (in one method), and therefore you have to typecast when you are going to use the values as char. As I see it, you do not get the same result from adding using int as adding using char?

However if you want to keep it in one class you could also inherrit the ArrayList. This way could look like this...

Code:

    class ASCIIFiller : ArrayList
    {
        public void Add(int start, int end)
        {
            for(int i = start; i <= end; i++)
                this.Add((char)i);
        }

        public void Add(char start, char end)
        {
            for(char c = start; c <= end; c++)
                this.Add(c);
        }

        public override string ToString()
        {
            string str = ""; 
            for(int i = 0; i < this.Count; i++)
                str += this[i];
            return str;
        }
    }

    class MainTester
    {
        [STAThread]
        static void Main(string[] args)
        {
            ASCIIFiller filler01 = new ASCIIFiller();
            filler01.Add(48,  57);
            filler01.Add(65,  90);
            filler01.Add(97, 122);
            Console.WriteLine(filler01.ToString());

            ASCIIFiller filler02 = new ASCIIFiller();
            filler02.Add('0', '9');
            filler02.Add('A', 'Z');
            filler02.Add('a', 'z');
            Console.WriteLine(filler02.ToString());

            Console.WriteLine((
                (filler01.ToString().Equals(filler02.ToString()))? 
                    "passed" : "failed"));
        }
    }

Naturally, one could leave out the ToString method to make the class even smaller ;)

Jacob.