java中英文獲取首字母之後分組排序
阿新 • • 發佈:2019-01-22
package com.syz; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; /** * @author shiyz * @creation date 2012-10-25 上午13:01:21 * */ public class Sort { public static void main(String[] args) { Sort obj1 = new Sort(); 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("元方"); Map map=obj1.sort(list); System.out.println("-------分組後的輸出-----------"); 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("Y")); } public Sort() { } //字母Z使用了兩個標籤,這裡有27個值 //i, u, v都不做聲母, 跟隨前面的字母 private char[] chartable = { '啊', '芭', '擦', '搭', '蛾', '發', '噶', '哈', '哈', '擊', '喀', '垃', '媽', '拿', '哦', '啪', '期', '然', '撒', '塌', '塌', '塌', '挖', '昔', '壓', '匝', '座' }; private 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' }; private 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]); } } //主函式,輸入字元,得到他的聲母, //英文字母返回對應的大小寫字母 //其他非簡體漢字返回 '0' 按引數 public char Char2Alpha(char ch,String type) { if (ch >= 'a' && ch <= 'z') return (char) (ch - 'a' + 'A');//為了按字母排序先返回大寫字母 // 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)){//大寫 return alphatableb[i]; }else{//小寫 return alphatables[i]; } } } //根據一個包含漢字的字串返回一個漢字拼音首字母的字串 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; } //根據一個包含漢字的字串返回第一個漢字拼音首字母的字串 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使用了兩個標籤 while (j < 26 && (table[j] == table[i])) ++j; if (j == 26) return gb <= table[j]; else return gb < table[j]; } //取出漢字的編碼 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 list){ 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++){//為了排序都返回大寫字母 if(a.equals(String2AlphaFirst(list.get(i).toString(),"b"))){ arraylist.add(list.get(i).toString()); } } map.put(a,arraylist); arraylist=new ArrayList(); } return map; } }