Question

JAVA Language: Write a program that prompts the user to enter a positive integer n (0 up to 232 -1). You must write a function that takes as input n and returns a string s representing the number n in binary. For this assignment, you must use the method of successive division by 2 to convert the number to binary. Your main program must print out s. Example: If the user enters the number 66, your program must print out 1000010.

Answer 1

import java.util.Scanner;

public class DecimalToBinary {

    public static String convertToBinary(int n) {
        if(n == 0) return "0";
        String binary = "";
        while (n > 0) {
            binary = (n % 2) + binary;
            n /= 2;
        }
        return binary;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter a decimal number: ");
        int n = in.nextInt();
        System.out.println(n + " in binary is " + convertToBinary(n));
        in.close();
    }

}