Example: Java program to convert decimal to binary using array

C
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Java
Python
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// Java program to convert decimal to binary using array
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        // Step-1 Declare variables
        Scanner sc = new Scanner(System.in);
        int[] binary = new int[32];
        int index = 0;

        // Step-2 Input decimal number
        System.out.print("Enter a decimal number: ");
        int num = sc.nextInt();

        // Step-3 Convert to binary using division
        while (num > 0) {
            binary[index++] = num % 2;
            num = num / 2;
        }

        // Step-4 Print binary in reverse order
        System.out.print("Binary representation: ");
        for (int i = index - 1; i >= 0; i--) {
            System.out.print(binary[i]);
        }

        System.out.println();
        sc.close();
    }
}