using System;
using System.Collections;
using System.Windows.Forms;

namespace Science.Mathematics.Calculus
{
	/// <summary>
	/// int is the same as Integer.
	/// </summary>
	public class Integer
	{
		private int x;
		public Integer(int n)
		{
			x = n;
			bbase = 10;
		}
		private int bbase;
		public int Base
		{
			get{return bbase;}
			set
			{
				bbase=value;
				if(bbase > 36)
				try{throw new Exception();}
				catch (Exception)
				{
					MessageBox.Show("Too big base, Base should be less than or equal to 36.",
					"Invalid Input",MessageBoxButtons.OK, MessageBoxIcon.Error );
				}
			}
		}
		public char[] IntegerDigits
		{
			get
			{
				if(bbase == 10)
				{
					char[] res;
					string s = x.ToString();
					res = s.ToCharArray();
					return res;
				}
				else
				{
					int temp = x, xx;
					char cx = '0';
					ArrayList al = new ArrayList(1);
					while(temp != 0)
					{
						xx = temp % bbase;											
						temp = (temp - xx)/bbase;
						if(xx < 10)	al.Add(xx);
						else
						{
							if(xx == 10) cx = 'A';
							else if(xx == 11) cx = 'B';
							else if(xx == 12) cx = 'C';
							else if(xx == 13) cx = 'D';
							else if(xx == 14) cx = 'E';
							else if(xx == 15) cx = 'F';
							else if(xx == 16) cx = 'G';
							else if(xx == 17) cx = 'H';
							else if(xx == 18) cx = 'I';
							else if(xx == 19) cx = 'J';
							else if(xx == 20) cx = 'K';
							else if(xx == 21) cx = 'L';
							else if(xx == 22) cx = 'M';
							else if(xx == 23) cx = 'N';
							else if(xx == 24) cx = 'O';
							else if(xx == 25) cx = 'P';
							else if(xx == 26) cx = 'Q';
							else if(xx == 27) cx = 'R';
							else if(xx == 28) cx = 'S';
							else if(xx == 29) cx = 'T';
							else if(xx == 30) cx = 'U';
							else if(xx == 31) cx = 'V';
							else if(xx == 32) cx = 'W';
							else if(xx == 33) cx = 'X';
							else if(xx == 34) cx = 'Y';
							else cx = 'Z';
							al.Add(cx);
						}
					}
					char[] res = new char[al.Count];
					for(int j = 0; j < al.Count; j++)
					{
						res[j] = Convert.ToChar(Convert.ToString(al[j]));
					}
					return res;
				}
			}
		}	
		public int IntegerExponent(int b) //the highest power of b that divides n. 
		{
			int n = 0, temp = x, mmod;
			mmod = temp % b; 
			while(mmod == 0)
			{
				n++;
				temp /= b;
				mmod = temp % b;
			}
			return n;
		}	
	}
}