java 计算平均值，去除不合理的数据

package com.ine.tool;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
* 计算平均值，去除不合理的数据
*
* @author Ro
*
*/
public class AverageTool
{
/**
* 主方法
*/
public static int getAverage(String str_int_arr)
{
int[] int_arr = stringToIntWhitSort(str_int_arr.split(","));
if (1 < int_arr.length)
{
return getAverageByGoodList(getGoodListByBaseList(getBaseListByIntArray(int_arr)));
}
return Integer.parseInt(str_int_arr);
}

/**
* 将String数组转换为int数组
*/
private static int[] stringToIntWhitSort(String[] arrs)
{
int[] ints = new int[arrs.length];
for (int i = 0; i < arrs.length; i++)
{
ints[i] = Integer.parseInt(arrs[i]);
}

Arrays.sort(ints);
System.out.println("ints：" + Arrays.toString(ints));
return ints;
}

/**
* 将int数组根据计算的基准值按块分离
*/
private static List<List<Integer>> getBaseListByIntArray(int[] int_arr)
{
List<List<Integer>> list = new ArrayList<List<Integer>>();
list.add(new ArrayList<Integer>());

int list_index = 0;
int average_flag = 0;
int sum_temp = 0;

for (int i : int_arr)
{
sum_temp += i;
}
average_flag = sum_temp / int_arr.length;

System.out.println("average_flag：" + average_flag);
for (int i = 0; i < int_arr.length - 1; i++)
{
if (average_flag >= Math.abs(int_arr[i] - int_arr[i + 1]))
{
list.get(list_index).add(int_arr[i]);
}
else
{
list.get(list_index++).add(int_arr[i]);
list.add(new ArrayList<Integer>());
}

if ((i + 2) == int_arr.length)
{
list.get(list_index).add(int_arr[i + 1]);
}
}
System.out.println("getBaseListByIntArray：" + list.toString());
return list;
}

/**
* 筛选留下数据最多的块
*/
private static List<List<Integer>> getGoodListByBaseList(
List<List<Integer>> list)
{
if (1 < list.size())
for (int i = 1; i < list.size(); i++)
{
if (list.get(0).size() != list.get(i).size())
{
if (list.get(0).size() < list.get(i).size())
{
list.remove(0);
}
else
{
list.remove(i);
}
i--;
}
}
System.out.println("getGoodListByBaseList：" + list.toString());
return list;
}

/**
* 将块计算平均值，如果数据大于两位，则个位四舍五入
*/
private static int getAverageByGoodList(List<List<Integer>> good_list)
{
int average = 0;
int sum_temp = 0;
int sum_index = 0;
for (List<Integer> t_list : good_list)
{
for (int i : t_list)
{
sum_temp += i;
sum_index += 1;
}
}
average = sum_temp / sum_index;
if (10 < average)
average = (average + 5) / 10 * 10;
return average;
}
}