在java中使用低、高、正确选项猜测数字

我正试图用java编写一个具有以下输出的java代码

正如你们所看到的，它总是把范围缩小一半。我花了几个小时试图找出答案，但没有结果。如果你们能给我一个提示，我将不胜感激。下面是我编写代码的失败尝试

import java.util.Scanner;
public class GuessNumber
{
   public static void main(String[]args)
   {
          int num1 = 0,num2 = 100,guesses = 0;
          String answer;
          boolean correct = false;

          Scanner keyboard = new Scanner(System.in);

          do{
              System.out.print("Is the number " + <?> + "? ");       //have no idea
              answer = keyboard.next();

              if(answer.equalsIgnoreCase("C")) {
                    correct = true;
                    guessses++;
               }  
              else if(answer.equalsIgnoreCase("H")){
                    ? = (num1 + num2) / 2;                   //lost here 
                    guesses++;
               } 
              else if(answer.equalsIgnoreCase("L")){
                    ? = (num1 + num2) / 2;                   //lost here
                    guesses++;
               }
           }while(correct == false);

    System.out.print("It took me " + guesses + " guesses!");   
 }

import java.util.Scanner；
公共类猜测数
{
公共静态void main（字符串[]args）
{
int num1=0，num2=100，猜测=0；
字符串回答；
布尔正确=错误；
扫描仪键盘=新扫描仪（System.in）；
做{
System.out.print（“是数字“++”？”；//不知道
答案=键盘。下一步（）；
如果（回答：等信号情况（“C”））{
正确=正确；
猜测++；
}  
否则，如果（回答。等信号情况（“H”））{
？=（num1+num2）/2；//此处丢失
猜测++；
} 
else if（回答。等效信号情况（“L”））{
？=（num1+num2）/2；//此处丢失
猜测++；
}
}while（correct==false）；
System.out.print（“它花了我+猜测+猜测！”）；
}

---

}

试试这个，它的作用是，虽然答案不正确，但它将取num1（猜测的最小值）和num2（猜测的最大值）并找到它们的平均值。如果数字高于最新猜测，我们将下限设置为最新猜测；如果数字较低，我们将上限设置为最新猜测

import java.util.Scanner;

public class GuessNumber{

public static void main(String[]args)
{
          int num1 = 0,num2 = 101,guesses = 0, guess=0;
          String answer;
          boolean correct = false;

          Scanner keyboard = new Scanner(System.in);
          do{
              guess=(num1+num2) /2 > 0? (num1+num2) /2:1;

              System.out.print("Is the number " + guess + "? ");       
              answer = keyboard.next();

              if(answer.equalsIgnoreCase("C")) {
                    correct = true;
                    guesses++;
               }  
              else if(answer.equalsIgnoreCase("H")){
                    num1 = guess;              
                    guesses++;
               } 
              else if(answer.equalsIgnoreCase("L")){
                    num2 = guess;                  
                    guesses++;
               }

           }while(correct == false);    
           System.out.print("It took me " + guesses + " guesses!");   
 }

}

---

顺便说一句，猜测范围在1-100之间，让一个变量

int currentGuess

保持计算机当前的猜测怎么样？然后在代码中编写的

？

处重新分配它的值…我想对于start，您不希望在每个循环中都输入答案。非常感谢。我非常接近，但从未到达。谢谢Kevin。您为我节省了数小时。

public static void main(String[]args)
{
          Random randomNumber = new Random();
          int num1 = 0,num2 = 100,guesses = 0, guess=0;
          String answer;
          boolean correct = false;

          Scanner keyboard = new Scanner(System.in);

          do{
              guess=randomNumber.nextInt(num2-num1) + num1; 

              System.out.print("Is the number " + guess + "? ");       
              answer = keyboard.next();

              if(answer.equalsIgnoreCase("C")) {
                    correct = true;
                    guessses++;
               }  
              else if(answer.equalsIgnoreCase("H")){
                    num1 = guess;              
                    guesses++;
               } 
              else if(answer.equalsIgnoreCase("L")){
                    num2 = guess;                  
                    guesses++;
               }
           }while(correct == false);    
           System.out.print("It took me " + guesses + " guesses!");   
 }

import java.util.Scanner;

public class GuessNumber{

public static void main(String[]args)
{
          int num1 = 0,num2 = 101,guesses = 0, guess=0;
          String answer;
          boolean correct = false;

          Scanner keyboard = new Scanner(System.in);
          do{
              guess=(num1+num2) /2 > 0? (num1+num2) /2:1;

              System.out.print("Is the number " + guess + "? ");       
              answer = keyboard.next();

              if(answer.equalsIgnoreCase("C")) {
                    correct = true;
                    guesses++;
               }  
              else if(answer.equalsIgnoreCase("H")){
                    num1 = guess;              
                    guesses++;
               } 
              else if(answer.equalsIgnoreCase("L")){
                    num2 = guess;                  
                    guesses++;
               }

           }while(correct == false);    
           System.out.print("It took me " + guesses + " guesses!");   
 }

}