SortUtils.java

package cn.dreampie.common.utils;

import cn.dreampie.common.web.model.Model;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Created by wangrenhui on 14-7-3.
 */
public class SortUtils {

    private static SortUtils sortUtils = new SortUtils();

    public static SortUtils me() {
        return sortUtils;
    }

    public static void main(String[] args) {
        SortUtils obj1 = new SortUtils();

        System.out.println("======================");
        ArrayList list = new ArrayList();
        list.add("adisen");
        list.add("bulsi");
        list.add("Kobe");
        list.add("布丁");
        list.add("杜甫");
        list.add("刘方");
        Map map = obj1.sort(list);
        System.out.println("-------分组后的输出-----------");
        System.out.println(map.get("A"));
        System.out.println(map.get("B"));
        System.out.println(map.get("C"));
        System.out.println(map.get("D"));
        System.out.println(map.get("L"));
    }


    //字母Z使用了两个标签，这里有２７个值
    //i, u, v都不做声母, 跟随前面的字母
    public char[] chartable =
            {
                    '啊', '芭', '擦', '搭', '蛾', '发', '噶', '哈', '哈',
                    '击', '喀', '垃', '妈', '拿', '哦', '啪', '期', '然',
                    '撒', '塌', '塌', '塌', '挖', '昔', '压', '匝', '座'
            };
    public char[] alphatableb =
            {
                    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
                    'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'
            };
    public char[] alphatables =
            {
                    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
                    'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
            };

    private int[] table = new int[27];  //初始化

    {
        for (int i = 0; i < 27; ++i) {
            table[i] = gbValue(chartable[i]);
        }
    }

    //主函数,输入字符,得到他的声母,
    //英文字母返回对应的大小写字母
    //其他非简体汉字返回 '0'  按参数
    public char Char2Alpha(char ch, String type) {
        if (ch >= 'a' && ch <= 'z')
            return (char) (ch - 'a' + 'A');//为了按字母排序先返回大写字母
        // return ch;
        if (ch >= 'A' && ch <= 'Z')
            return ch;

        int gb = gbValue(ch);
        if (gb < table[0])
            return '0';

        int i;
        for (i = 0; i < 26; ++i) {
            if (match(i, gb))
                break;
        }

        if (i >= 26) {
            return '0';
        } else {
            if ("b".equals(type)) {//大写
                return alphatableb[i];
            } else {//小写
                return alphatables[i];
            }
        }
    }

    //根据一个包含汉字的字符串返回一个汉字拼音首字母的字符串
    public String String2Alpha(String SourceStr, String type) {
        String Result = "";
        int StrLength = SourceStr.length();
        int i;
        try {
            for (i = 0; i < StrLength; i++) {
                Result += Char2Alpha(SourceStr.charAt(i), type);
            }
        } catch (Exception e) {
            Result = "";
        }
        return Result;
    }

    //根据一个包含汉字的字符串返回第一个汉字拼音首字母的字符串
    public String String2AlphaFirst(String SourceStr, String type) {
        String Result = "";
        try {
            Result += Char2Alpha(SourceStr.charAt(0), type);
        } catch (Exception e) {
            Result = "";
        }
        return Result;
    }

    private boolean match(int i, int gb) {
        if (gb < table[i])
            return false;
        int j = i + 1;

        //字母Z使用了两个标签
        while (j < 26 && (table[j] == table[i]))
            ++j;
        if (j == 26)
            return gb <= table[j];
        else
            return gb < table[j];
    }

    //取出汉字的编码
    private int gbValue(char ch) {
        String str = new String();
        str += ch;
        try {
            byte[] bytes = str.getBytes("GBK");
            if (bytes.length < 2)
                return 0;
            return (bytes[0] << 8 & 0xff00) + (bytes[1] &
                    0xff);
        } catch (Exception e) {
            return 0;
        }
    }

    public Map sort(List<String> list) {
        if (list == null)
            return null;
        Map map = new HashMap();
        ArrayList arraylist = new ArrayList();
        String[] alphatableb =
                {
                        "A", "B", "C", "D", "E", "F", "G", "H", "I",
                        "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"
                };
        for (String a : alphatableb) {
            for (int i = 0; i < list.size(); i++) {//为了排序都返回大写字母
                if (a.equals(String2AlphaFirst(list.get(i).toString(), "b"))) {
                    arraylist.add(list.get(i).toString());
                }
            }
            map.put(a, arraylist);
            arraylist = new ArrayList();
        }
        return map;
    }

    public Map sort(List<? extends Model> list, String attr) {
        if (list == null)
            return null;
        Map map = new HashMap();
        ArrayList arraylist = new ArrayList();
        String[] alphatableb =
                {
                        "A", "B", "C", "D", "E", "F", "G", "H", "I",
                        "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"
                };
        for (String a : alphatableb) {
            for (int i = 0; i < list.size(); i++) {//为了排序都返回大写字母
                if (a.equals(String2AlphaFirst(list.get(i).get(attr).toString(), "b"))) {
                    arraylist.add(list.get(i));
                }
            }
            map.put(a, arraylist);
            arraylist = new ArrayList();
        }
        return map;
    }
}