【蓝桥杯】带分数

标签：java   算法   蓝桥杯   

6

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class 带分数 {

	public static List<String> list = new ArrayList<String>();

	public static StringBuffer sb = new StringBuffer();

	public static int num1 = 0;
	public static int num2 = 0;
	public static int num3 = 0;

	public static int count = 0;

	public static int num = 0;

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		num = scan.nextInt();
		for (int i = 1; i < 10; i++) {
			list.add(i + "");
		}
		go(0);
		System.out.println(count);
	}

	public static void go(int index) {
		if (index == 9) {
			for (int i = 1; i < sb.length(); i++) {
				num1 = Integer.parseInt(sb.substring(0, i));
				if (num1 > num) {
					break;
				} else {
					for (int j = i + 1; j < sb.length(); j++) {
						num2 = Integer.parseInt(sb.substring(i, j));
						num3 = Integer.parseInt(sb.substring(j, sb.length()));
						if (num1 + num2 / num3 == num && num2 % num3 == 0) {
							count++;
							// System.out.println(num1 + " " + num2 + " " +
							// num3);
						}
					}
				}
			}
		} else {
			for (int i = 0; i < list.size(); i++) {
				String temp = list.get(i);
				sb.append(temp);
				list.remove(i);
				go(index + 1);
				list.add(i, temp);
				sb.deleteCharAt(sb.length() - 1);
			}
		}
	}

}

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【蓝桥杯】带分数

标签：java   算法   蓝桥杯   

原文地址：http://blog.csdn.net/tracysilocean/article/details/26279883