Java_Fundamentals/BinarytoDecimal.java at main · devdeepak06/Java_Fundamentals · GitHub

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// write a program that converts a binary number to a decimal number

// Input Format:

// Integer n

// Constraints:

// 0 <= n <= 1000000000

// Output Format

// Decimal number

// Sample Input

// 1100

// Sample Output

// 12

// Explanation

// For the given input, you have to print the decimal equivalent of it. Hence, 12.

// Sample Input

// 111

// Sample Output

// 7

// Explanation

// For the given input, you have to print the decimal equivalent of it. Hence, 7.

import java.util.Scanner;

public class BinarytoDecimal {

public static void main(String[] args) {

try (Scanner s = new Scanner(System.in)) {

int n = s.nextInt();

int dec = 0;

int pow = 0;

while (n > 0) {

int rem = n % 10;

dec = dec + rem * (int)Math.pow(2, pow);

pow++;

n = n / 10;

}

System.out.println(dec);

}

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