Binary to Decimal

 

Given a binary number as an integer N, convert it into decimal and print.

Sample Input 1 :
1100
Sample Output 1 :
12
import java.util.Scanner;
import java.io.*;
public class Main {
	
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
        
        int i=0;
        int s=0;
        while(n!=0)
        {
            int d=n%10;
            int b= d* (int)Math.pow(2,i);
            s=s+b;
            n=n/10;
            i++;
        }
        System.out.println(s);

	}
}

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