Challenge 2 Problem

#1

The code that I wrote in Eclipse is running perfectly but the same code while I am trying to run here it is showing error.
The error is Exception in thread “main” java.util.NoSuchElementException.

My code is
Scanner scn=new Scanner(System.in);

int n=scn.nextInt();

	int i,num=0,m=n-1;
	for(i=0;i<n;i++){
		int a=2;
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();
		num=num+N*(int)Math.pow(a,m);
		m--;
		//System.out.println(+num);
}
	System.out.println(+num);

P.S. I have imported the Math library for using the power function.

#2

@VinayakSingh11111,
https://ide.codingblocks.com/s/251463 corrected code.

Algo:

  • The idea is to extract the digits of given binary number starting from right most digit and keep a variable decvalue.
  • At the time of extracting digits from the binary number, multiply the digit with the proper base (Power of 2)
  • and add it to the variable dec_value.
  • At the end, the variable decvalue will store the required decimal number.

Also, don’t use 2 different scanner objects. Only use 1 scanner object in the entire program.

#3

No, I just want to know what is the cause of the error?

#4

@VinayakSingh11111,

Don’t use 2 different scanner objects. Only use 1 scanner object in the entire program and that 1 scanner object should be common for all inputs

#5

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