Extra Seed Post

import java.util.Scanner;
import java.util.ArrayList;

public class seedExtra {
    public static void main(String[] args) {
        Scanner userInput = new Scanner(System.in);
        int a = userInput.nextInt();
        int b = userInput.nextInt();
        int c = a + b;
        ArrayList<Integer> binary = new ArrayList<Integer>();
        int sum = 0;
        for (int i = 7; i >= 0; i--) {
            sum += Math.pow(2, i);
            if (sum == c) {
                binary.add(1);
                for (int j = i - 1; j >= 0; j--) {
                    binary.add(0);
                }
                break;
            } else if (sum > c) {
                sum -= Math.pow(2, i);
                binary.add(0);
            } else if (sum < c) {
                binary.add(1);
            }
        }

        String finalAnswer = "";
        int zeroCount = 0;
        for (int x = 0; x < binary.size(); x++) {
            finalAnswer += binary.get(x);
        }

        for (int y = 0; y < finalAnswer.length(); y++) {
            if (finalAnswer.charAt(y) == '1') {
                finalAnswer = finalAnswer.substring(y, finalAnswer.length());
                break;
            } else if (y == finalAnswer.length() - 1) {
                finalAnswer = "0";
                break;
            }
        }

        System.out.println(finalAnswer);
    }
}

seedExtra.main(null);

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