import java.util.ArrayList;
import java.util.List;

public class NoteBook {
 public static void main(String[] args) {
// calc();

 System.out.println(Integer.toBinaryString(8));
 String sa = "00110012";
 char[] cc = sa.toCharArray();
 for (int i = 0; i < cc.length; i++) {
 int a = Integer.parseInt(cc[i]+"");
 System.out.println("cc==" + a);
 }

 List<Byte> byteList = new ArrayList<>();
 byte[] bytes = {1, 10, 100};
 for (int i = 0; i < bytes.length; i++) {
 byteList.add(bytes[i]);
 }
 byte result[] = new byte[bytes.length];
 for (int i = 0; i < byteList.size(); i++) {
 result[i] = byteList.get(i);
 }
 for (int i = 0; i < result.length; i++) {
 System.out.println("byte[" + i + "]=" + result[i]);
 }
 byte[] a1 = {(byte) 128};
 byte[] a2 = {2};
 byte[] a3 = {3};

 java.lang.String s = "-1020123qwe";
 byte[] ccc = concat(s.getBytes());
 System.out.println(new String(ccc));
 System.out.println(Byte.MAX_VALUE);

 }

 private static byte[] concat(byte[]... bytes) {
 List<Byte> list = new ArrayList<>();
 for (byte[] aByte : bytes) {
 for (int i = 0; i < aByte.length; i++) {
 list.add(aByte[i]);
 }

 }
 byte[] bb = new byte[list.size()];
 for (int i = 0; i < list.size(); i++) {
 bb[i] = list.get(i);
 }
 return bb;

 }

 /**
 * 时间、计算
 */
 static void calc() {
 double loss = -80000;
 System.err.println("total amount==" + loss);
 int mouth = (2022 - 2020) * 12 - (12 - 9);
 System.err.println("total mouth==" + mouth);
 double average = loss / mouth;
 System.err.println("average mouth of loss ==" + average);//600 *60 =360

 }

}