package yn.ngems.cn.util;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

public class InputUtil {//數字輸入類

public static int getNumber(String prompt) throws IOException {

BufferedReader buf =

String str = null;

boolean flag = true;

int num = 0;

while(flag) {

System.out.print(prompt);

str = buf.readLine();

if(str.matches("\\d+")) {

num = Integer.parseInt(str);

flag = false;

}else {

System.

}

}

return num;

}

}

package yn.ngems.cn.compare;

import java.io.IOException;

import yn.ngems.cn.interfaceNum.INumberCompare;

import yn.ngems.cn.util.InputUtil;

public class CompareNumber implements INumberCompare{

public CompareNumber() {}

/**

 * int[2]兩個內容，0為最大值，1為最小值

 * @return

 */

public int [] compareNum(int count) {

int data [] = new int [2];

int num [] = new int[count];

for(int x = 0;x < num.length;x ++) {

try {

num[x] = InputUtil.getNumber("請輸入第" + (x + 1) + "數字：");

} catch (IOException e) {

e.printStackTrace();

}

}

data[0] = num[0];

data[1] = num[0];

for(int x = 0;x < num.length;x ++) {

if(num[x] > data[0]) {

data[0] = num[x];

}

if(num[x] < data[1]) {

data[1] = num[x];

}

}

return data;

}

}

package yn.ngems.cn.factory;

import yn.ngems.cn.compare.CompareNumber;

import yn.ngems.cn.interfaceNum.INumberCompare;

public class FactoryNumber {

public static INumberCompare getInstance() {

return new CompareNumber();

}

}

package yn.ngems.cn.test;

import java.io.IOException;

import yn.ngems.cn.factory.FactoryNumber;

import yn.ngems.cn.interfaceNum.INumberCompare;

public class NumberTest {

public static void main(String[] args) throws IOException {

INumberCompare numcompare = FactoryNumber.getInstance();

int results [] = numcompare.compareNum(10);

System.out.println("最大值：" + results[0] + "、最小值：" + results[1]);

}

}

package yn.ngems.cn.interfaceNum;

public interface INumberCompare {

public int [] compareNum(int count);

}