public class BigInteger {

    int sing;
    byte[] val;
    
    public BigInteger(int val){
        // 将传递的初始值，按位取值，存入字节数组中
        int val2 = val;
        int i=0;
        while(val/2!=0){
            val = val/2;
            i++;
        }
        i++;
        this.val = new byte[i];
        int j=0;
        while(val2/2!=0){
            this.val[j++] = (byte) (val2%2);
            val2 = val2/2;        
        }
        this.val[j]=(byte) (val2%2);
    }
    public static void main(String[] args) {
        System.out.print("请输入要转换为二进制的数：");
        BigInteger bigInteger = new BigInteger(new Scanner(System.in).nextInt());
        for(int i=bigInteger.val.length-1;i>=0;i--){
            System.out.print(bigInteger.val[i]);
        }
    }
}