oop

package oop;

import java.util.Random;

/**
 * 
 * @author Mouse
 *
 */
public class test {
	private static int max = 20;
	private static int generation = 3;
	private static int count = 5;

	public static void main(String[] args) {
		for (int i = 0; i < count; i++) {
			int karyon = new Random().nextInt(max) + 1;
			String result = new Matrix(karyon, max, generation - 1).divide();
			System.out.println(result.substring(1) + "=" + karyon);
		}

	}
}

package oop;

public class Cell {
	int karyon;
	int generation;
	int max;

	public Cell(int karyon, int max, int generation) {
		this.karyon = karyon;
		this.generation = generation;
		this.max = max;

	}

	public String Divide() {
		String result = String.format("%+d", karyon);// %+d 表示 输出数据时带上正负号
		if (generation > 0) {
			result = new Matrix(karyon, max, generation).divide();
		}
		return result;
	}

}

package oop;

import java.util.Random;

public class Matrix extends Cell {
	public Matrix(int karyon, int max, int generation) {
		super(karyon, max, generation);
	}

	public String divide() {
		int x = new Random().nextInt(max) + 1;
		StringBuilder result = new StringBuilder();
		result.append(new Cell(x, max, generation - 1).Divide());
		result.append(new Cell(karyon - x, max, generation - 1).Divide());
		return result.toString();

	}

}