using System;
class GFG
{
// Function to delete nth digit
// from starting
static int deleteFromStart(int num, int n)
{
// Get the number of digits
int d = (int)Math.Log10(num) + 1;
// Declare a variable
// to form the reverse resultant number
int rev_new_num = 0;
// Loop with the number
for (int i = 0; num != 0; i++) {
int digit = num % 10;
num = num / 10;
if (i == (d - n)) {
continue;
}
else {
rev_new_num = (rev_new_num * 10) + digit;
}
}
// Declare a variable
// to form the resultant number
int new_num = 0;
// Loop with the number
for (int i = 0; rev_new_num != 0; i++) {
new_num = (new_num * 10)
+ (rev_new_num % 10);
rev_new_num = rev_new_num / 10;
}
// Return the resultant number
return new_num;
}
// Function to delete nth digit
// from ending
static int deleteFromEnd(int num, int n)
{
// Declare a variable
// to form the reverse resultant number
int rev_new_num = 0;
// Loop with the number
for (int i = 1; num != 0; i++) {
int digit = num % 10;
num = num / 10;
if (i == n) {
continue;
}
else {
rev_new_num = (rev_new_num * 10) + digit;
}
}
// Declare a variable
// to form the resultant number
int new_num = 0;
// Loop with the number
for (int i = 0; rev_new_num != 0; i++) {
new_num = (new_num * 10)
+ (rev_new_num % 10);
rev_new_num = rev_new_num / 10;
}
// Return the resultant number
return new_num;
}
// Driver code
public static void Main()
{
// Get the number
int num = 1234;
Console.WriteLine("Number: " + num );
// Get the digit number to be deleted
int n = 3;
Console.WriteLine("Digit to be deleted: " + n );
// Remove the nth digit from starting
Console.WriteLine("Number after " + n
+ " digit deleted from starting: "
+ deleteFromStart(num, n));
// Remove the nth digit from ending
Console.WriteLine( "Number after " + n
+ " digit deleted from ending: "
+ deleteFromEnd(num, n));
}
}
// This code is contributed by ihritik