java原碼補(bǔ)碼反碼關(guān)系解析

package comtest.example.admin.znum;
 
/**
 * Created by wrs on 2019/6/5,16:25
 * projectName: Testz
 * packageName: comtest.example.admin.znum
 * 輸入一個(gè)真值（整數(shù)）求它的原碼，反碼，補(bǔ)碼
 */
 
 
import java.util.Scanner;
 
 
public class Test {
 public static void main(String[] args) {
 System.out.println("True value--> original code");
 System.out.println("Please enter an integer!!!!!");
 Scanner sc = new Scanner(System.in);
 int value = sc.nextInt();
 StringBuilder syuan = new StringBuilder();
 if (value > 0) {
 String Bvalue = Integer.toBinaryString(value);//將一個(gè)整數(shù)轉(zhuǎn)換成字符串類型的二進(jìn)制數(shù)
 int n = Bvalue.length(); //二進(jìn)制的數(shù)字的個(gè)數(shù)n
 syuan.append("0,");
 syuan.append(Bvalue);
 System.out.println("Original code " + syuan); //原碼
 System.out.println("Complement code " + syuan); //補(bǔ)碼
 System.out.println("Inverse code " + syuan); //反碼
 
// System.out.println("二進(jìn)制數(shù)的n "+n);
 } else if (value < 0) {
 int value2 = Math.abs(value); //負(fù)數(shù)的絕對(duì)值
 int value3 = value2 - 1; //減一求反，求補(bǔ)碼
 String Bvalue = Integer.toBinaryString(value2);
 String BFvalue = Integer.toBinaryString(~value2);
 int n = Bvalue.length();
 String str = BFvalue.substring(BFvalue.length() - n); //截取反碼的后幾個(gè)數(shù)
 syuan.append("1,");
 syuan.append(Bvalue);
 System.out.println("Original code is :" + syuan);
 System.out.println("Inverse code is :1," + str);
 String BBvalue = Integer.toBinaryString(~value3);
 String str3 = BBvalue.substring(BFvalue.length() - n);
 System.out.println("Complement code is :1," + str3);
 } else {
 System.out.println("0 Original code is not only");
 System.out.println("[+0]riginal code 00.....0");
 System.out.println("[-0]riginal code 10.....0");
 System.out.println("--------------------------------------------");
 System.out.println("0 Complement code is not only");
 System.out.println("[+0]和[-0] Complement code 00.....0");
 System.out.println("---------------------------------------------");
 System.out.println("0 Inverse code is not only");
 System.out.println("[+0]Inverse code00..........0");
 System.out.println("[-0]Inverse code11..........1");
 }
 System.out.println("-------------------------------------------------");
 
 }
}

-------------------------------------------------
True value--> original code
Please enter an integer!!!!!
-65435
Original code is :1,1111111110011011
Inverse code is :1,0000000001100100
Complement code is :1,0000000001100101
-------------------------------------------------