古詩填字ゲーム第四講091121 B

import java.util.*;

public class      {

	public static void main(String[] args) {
		String[] poems = "     ,     ,     ,     ".split(",");
		String rightWords = "";
		String[] answers = new String[4];
		
		int rightOption = (int)(Math.random()* 4);
		
		//     
		for (int i = 0; i < 4; i++) {
			rightWords += poems[i].charAt((int)(Math.random()* 5));
		}
	
		answers[rightOption] = rightWords;
		//      
		for (int i = 0; i < answers.length; i++) {
			if (i == rightOption) continue;
			int[] pos = {0,1,2,3};
			for (int j = 0; j < 10; j++) {
				int x = (int)(Math.random()* 4);
				int y = (int)(Math.random()* 4);
				int tmp = pos[x];
				pos[x] = pos[y];
				pos[y] = tmp;
			}
			//           
			//----------------         
			String anAnswer = "" + rightWords.charAt(pos[0]) + rightWords.charAt(pos[1]) + rightWords.charAt(pos[2]) + rightWords.charAt(pos[3]);
			if (anAnswer.equals(rightWords)) {
				i--;
				continue;
			}
			//          
			for (int j = 0; j < i; j++) {
				if (anAnswer.equals(answers[j])) {
					i--;
					continue;
				}
			}
			answers[i] = anAnswer;
		}
		
		//    
		for (int i = 0; i < poems.length; i++) {
			System.out.println(poems[i].replace(rightWords.charAt(i), '？'));
		}
		//    
		for (int i = 0; i < answers.length; i++) {
			System.out.print((char)('A' + i) + ". ");
			System.out.print(answers[i].charAt(0) + ", ");
			System.out.print(answers[i].charAt(1) + ", ");
			System.out.print(answers[i].charAt(2) + ", ");
			System.out.println(answers[i].charAt(3));
		}
		System.out.println("       ：");
		Scanner scanner = new Scanner(System.in);
		String userInput = scanner.next();
		int u = userInput.charAt(0) - 'A';
		if (u==rightOption) {
			System.out.println("      ！");
		} else {
			System.out.println("      ！");
			System.out.println("     "  + (char)('A' + rightOption));
		}
	}
}