Revert "Update README.md"

import java.util.Random;
import java.io.*;

final class Question{
  private final int[] question = {0,1,2,3,4,5,6,7,8,9};
  private final int tmp;
  private final int i;

  private Question(){
    for (this.i = 0; this.i < question.length;i++) {
      int rand = new Random().nextInt(10);
      tmp = question[rand];
      question[rand] = question[9];
      question[9] = tmp;
    }
    System.out.println(question[0]+""+question[1]+""+question[2]+""+question[3]);
  }
  public int[] getQestion{
    return question[];
  } 
} 

final class Input{
  private final int input;
  private final int num;
  private final int flag = 0 ;
    private Input(){
      InputStreamReader isr = new InputStreamReader(System.in);
      BufferedReader br = new BufferedReader(isr);
      try {
        String buf = br.readLine();
        input = Integer.parseInt(buf);
        String str = String.valueOf(buf);
        num = str.length();
      } catch (Exception e) {
        System.out.println("入力は数値のみです。");
        flag = 1;
      }
    }
} 


final class Inputsetter{
  private final int [] ans3 = new int[4];
  private final int hoge =0;
    private Inputsetter(Input input){
      ans3[3]=input.input%10;
      ans3[2]=input.input/10%10;
      ans3[1]=input.input/10/10%10;
      ans3[0]=input.input/10/10/10%10;
    
      for (int i = 0;i < 4;i++) {
        for (int j = 0;j < 4;j++) {
          if (i == j) {

          } else {
            if (ans3[i] == ans3[j] ) {
            System.out.println("入力に重複があります");
            input.flag = 1;
            break;
            }
          }
        }
        if (input.flag == 1) {
          break;
        }
      }
    }
    public int[] ansGet(){
      return ans3;
    }
}


final class Ans_check{
  private final int hit = 0;
  private final int blow = 0;
  private final int count2 = 0;
  private Ans_check(int flag, int count, Inputsetter ans, Question q) {
    count2 = count;
    if (flag == 0) {        
      for(int i = 0;i < 4; i++) {
        for(int j = 0;j < 4; j++) {
          if(i == j) { //hit check                
            if(q.question[i] == ans.ans3[j]) {
              hit++;
            } else {  
              
            }
          } else { //blow check
            if (q.question[i] == ans.ans3[j]) {
              blow++;
            } else {  
                
            }
          }
        }
      }

      if (hit == 4) {
        System.out.println("正解！");
        //return;
      } else {
        System.out.println("hit="+hit+",blow="+blow);
      }

      count2 = count;
      count2++;
    }
  }
}

public class hitandblow2 { 
  static public void main (String[] args) throws IOException {
  Question q = new Question();
  int count = 1;
  	while (true) {
  		System.out.println("4桁の数値を入力してください。(" + count +"回目)");
      Input input = new Input(); 
        
      if(input.flag == 0){        
        if (input.num != 4) {
          System.out.println("入力が4桁ではありません");
          continue;
        }
        Inputsetter ans = new Inputsetter(input);
        Ans_check aaa = new Ans_check(input.flag,count,ans,q);
        count = aaa.count2;
        if(aaa.hit == 4){
          return;
        }
      }
  	}    
  }
}