# Solution in C#

• There is a mathematical way to pick any digit (like index based array or string) from a given number i.e.

Let the given number is 184372 and if I want to pick digit 4 (at thousandths place), then I can use below expression to pick it

int x = 184372 ;
int answer = (x / Math.Pow( 10 , 3)) % 10; // where 3 is the i th place i.e. 100th place of 3 in 372.

Once you are able to pick any digit from a given number, then you can iterate like a regular string.

``````
public bool IsPalindrome(int x)
{
if (x < 0)
{ return false; }

int org = x;
int cnt = 0;

while (x != 0)
{
x = x / 10;
cnt++;
}
x = org;

int x1 = 0, x2 = 0;
int y1, y2, y3, y4, y5, y6, y8, y89, y0;
bool isPal = true;

try
{
checked
{
//if (cnt % 2 == 0)
{
for (int i = cnt - 1; i >= cnt / 2; i--)
{
y1 = int.Parse(Math.Pow(10, i).ToString());
y2 = x / y1;
x1 = (y2) % 10;

y6 = cnt - (i + 1);
string y7 = Math.Pow(10, (y6)).ToString();
y8 = x / int.Parse(y7);
x2 = (y8) % 10;

if (x1 != x2)
{
isPal = false;
break;
}
}
}
}
}
catch (Exception ex)
{
isPal = false;
}
return isPal;
}

``````

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