public NumberInBase ConvertFromDecimal(int n, int b)
{
NumberInBase x = new NumberInBase();
char[] z = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K',
'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T' };
x.b = b;
int add = 0;
int how_long = 0;
int pow = 1;
while (pow < n || pow == n)
{
pow *= b;
how_long++;
}
if (how_long == 0)
{
how_long = 1;
}
char[] array = new char[how_long];
for (int i = 0; i < how_long; ++i)
{
add = (int)(n % (Math.Pow(b, i + 1)));
add = add / (int)Math.Pow(b, i);
n -= n % (int)(Math.Pow(b, i + 1));
if (add > 9)
{
array[i] = z[add - 10];
}
else
{
array[i] = (char)(add + 48);
}
}
Array.Reverse(array);
string num = new string(array);
x.number = num;
return(x);
}
public int ConvertToDecimal(NumberInBase x)
{
int sum = 0;
for (int i = 0; i < x.number.Length; ++i)
{
if ((int)Char.GetNumericValue(x.number[x.number.Length - i - 1]) < 10 && (int)Char.GetNumericValue(x.number[x.number.Length - i - 1]) > -1)
{
sum += (int)Char.GetNumericValue(x.number[x.number.Length - i - 1]) * (int)(Math.Pow(x.b, i));
}
else
{
if (x.number[x.number.Length - i - 1] == 'A')
{
sum += 10 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'B')
{
sum += 11 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'C')
{
sum += 12 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'D')
{
sum += 13 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'E')
{
sum += 14 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'F')
{
sum += 15 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'G')
{
sum += 16 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'H')
{
sum += 17 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'I')
{
sum += 18 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'J')
{
sum += 19 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'K')
{
sum += 20 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'L')
{
sum += 21 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'M')
{
sum += 22 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'N')
{
sum += 23 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'O')
{
sum += 24 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'P')
{
sum += 25 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'Q')
{
sum += 26 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'R')
{
sum += 27 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'S')
{
sum += 28 * (int)(Math.Pow(x.b, i));
}
if (x.number[x.number.Length - i - 1] == 'T')
{
sum += 29 * (int)(Math.Pow(x.b, i));
}
}
}
return(sum);
}
