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Date: Mon, 17 May 1999 21:37:49 +0900
To: kashi@mn.waseda.ac.jp
From: Tetsuo Watanabe <nabe-@pluto.dti.ne.jp>
Subject: [JSJ]4/23:Ticket
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/*
Ｇ９７Ｐ１０１０−０：渡辺　哲雄

引き続き、提出を忘れていました。４桁の数字を１０にする課題です。

課題について
今回はGUIにしてみました。コマンドプロンプトから実行すると、電卓の様なウィンド
ウが出てきます。
そこで、４桁の数字を入力して、「GO!」ボタンを押すとテキストフィールドに答えが
ずらずらと吐き出
します。
*/

import java.awt.*;

class Ticket extends Frame{
	final int N = 4;
	double[] input = new double[N];
	int i=0;
	
	TextField NumField;
	TextArea AnsField;
	MakeTen mt;
	
	public Ticket(){
		setTitle("切符の数字を１０にしろ");	
		//setLayout(new FlowLayout());
		Panel p = new Panel();
		p.setLayout(new GridLayout(3,3));
		for(int i=0;i<=9;i++){
			p.add(new Button("" + (char)('0' + i)));
		}
		p.add(new Button("Clear"));
		p.add(new Button("Go!"));
		
		NumField = new TextField("",30);
		NumField.setEditable(false);
		
		AnsField = new TextArea(10,5);
		
		add("North",NumField);
		add("South",AnsField);
		add("Center",p);
//		add("East",new Button("Go!"));
	}
	
	public boolean handleEvent(Event e){
		if(e.id == Event.WINDOW_DESTROY){
			System.exit(0);
		}
	return super.handleEvent(e);
	}

	public boolean action(Event e,Object arg){
		String s = (String) arg;
		if('0' <= s.charAt(0) && s.charAt(0) <= '9'){
			Double integer=new Double(s);
			if(i>N-1){
				String lasts = NumField.getText();
				lasts = lasts.substring(0,N-1) + s;
				NumField.setText(lasts);
				input[N-1] = integer.doubleValue();
			}else{
				NumField.setText(NumField.getText() + s);
				input[i] = integer.doubleValue();
				i++;
			}
		}else if(arg.equals("Go!")){
			mt = new MakeTen(input,N);
			mt.Saiki(mt.no_input,N,0);
			for(i=0;i<mt.many; i++){
				AnsField.appendText(mt.answers[i]+"\n");
			}
		}else if(arg.equals("Clear")){
			NumField.setText("");
			for(int t=0; t<N; t++){
				input[t] = 0;
			}
			i=0;
		}
	return true;
  }


	public static void main(String[] args){
		Frame f = new Ticket();
		f.resize(200,300);
		f.show();
	}
}


class MakeTen{
	final int N = 4;
	double[] input = new double[N];
	int[] no_input = new int[N];
	int[] keisan = new int[(N-1)*3];
	String[] answers = new String[1000];
	int many=0;
	int ans_no = 0;
	
	public MakeTen(double[] d,int n){
		System.arraycopy(d,0,input,0,N);
		for(int no =0; no<N; no++){
			no_input[no] = no;
		}
	}
	
	public void Saiki(int[] d,int n,int keisan_n){
		int[] temp_input = new int[N];
		int i,j,k,l;
		String temp_ans;
		
		for(i=0; i<n; i++){
			for(j=i+1; j<n; j++){
				for(k=0; k<6; k++){
					System.arraycopy(d,0,temp_input,0,n);
					
					keisan[keisan_n] = temp_input[i];
					keisan[keisan_n+1] = temp_input[j];
					keisan[keisan_n+2] = k;
					for(l=j;l<N-1;l++){
						temp_input[l] = temp_input[l+1];
					}
					if(n==2){
						temp_ans = Shisoku(keisan);
						if(temp_ans.equals("This is wrong")){
							//なんもしない
						}else{


//							System.out.println(temp_ans);
//							for(int tt=0;tt<9;tt++){
//							System.out.print(keisan[tt]);
//							if(tt == 8){
//								System.out.println("");
//							}
//							}



							this.many++;
							this.answers[ans_no] = temp_ans;
							ans_no++;
						}
						
					}else{
						Saiki(temp_input,n-1,keisan_n+3);
						
					}
				}
			}
		}
	}
	
	
	public String Shisoku(int[] a){
	/*******************************************************
	配列ａには計算する順番が　式で入っている
	
	a[(s*3)+2]番目の数字はどの演算を使って計算するかの情報
	０：足し算、１：かけ算、２：引き算、３：逆引き算、４：わり算、５：逆わり算
	を行う
	*******************************************************/
		double[] dans = new double[N];//これは最終的な数字を入れる変数。これが１０
になればOK
		String[] answer = new String[N];//ここに計算式を入れる。戻り値はanswer[0]。
		int index;
		int[] flag = new int[N];//表記をただすためのフラグ。
								//使用済みの数字の添え字に-1を入れる。
		
		System.arraycopy(input,0,dans,0,N);
		
		for(int t=0; t<N; t++){//１の時は未使用
			flag[t] = 1;
			answer[t] = ""+dans[t];
		}
		
		
		for(int t=0; t<N-1; t++){
			
			index = (t*3)+2;	
			
			switch(a[index]){
				case 0:
					answer[a[index-2]] = "(" +answer[a[index-2]]+ "+" +answer[a[index-1]]+ 
")";
					dans[a[index-2]] = dans[a[index-2]]+dans[a[index-1]];
					break;
				case 1:
					answer[a[index-2]] = "(" +answer[a[index-2]]+ "*" +answer[a[index-1]]+ 
")";
					dans[a[index-2]] = dans[a[index-2]]*dans[a[index-1]];
					break;
				case 2:
					answer[a[index-2]] = "(" +answer[a[index-2]]+ "-" +answer[a[index-1]]+ 
")";
					dans[a[index-2]] = dans[a[index-2]]-dans[a[index-1]];
					break;
				case 3:
					answer[a[index-2]] = "(" +answer[a[index-1]]+ "-" +answer[a[index-2]]+ 
")";
					dans[a[index-2]] = dans[a[index-1]]-dans[a[index-2]];
					break;
				case 4:
					answer[a[index-2]] = "(" +answer[a[index-2]]+ "/" +answer[a[index-1]]+ 
")";
					dans[a[index-2]] = dans[a[index-2]]/dans[a[index-1]];
					break;
				case 5:
					answer[a[index-2]] = "(" +answer[a[index-1]]+ "/" +answer[a[index-2]]+ 
")";
					dans[a[index-2]] = dans[a[index-1]]/dans[a[index-2]];
					break;
				default:
					System.out.println("DEFAULT!!");
					break;
			}
		}
		
		if(9.99<dans[0] && dans[0]<10.01){
			return answer[0];
		}else{
			answer[0] = "This is wrong";
			return answer[0];
		}
	}
}