package com.amt.crm.controller;

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.*;


public class test2 {
    public static void main(String [] args) throws Exception {

        BufferedReader br = new BufferedReader(new FileReader("C:\\test1\\b.txt"));

        StringBuffer sb = new
 
 StringBuffer();
        String text =null;
        while ((text=br.readLine())!= null){
            sb.append(text);// 將讀取出的字元追加到stringbuffer中
        }
        br.close();  // 關閉讀入流

        String str = sb.toString().toLowerCase(); // 將stringBuffer轉為字元並轉換為小寫
        String[] words = str.split("[^(a-zA-Z)]+"
 
);  // 非單詞的字元來分割，得到所有單詞
        Map<String ,Integer> map = new HashMap<String, Integer>() ;

        for(String word :words){
            if(map.get(word)==null){  // 若不存在說明是第一次，則加入到map,出現次數為1
                map.put(word,1);
            }else{
                map.put(word,map.get(word)+1);  // 若存在，次數累加1
 

            }
        }

        // 排序
        List<Map.Entry<String ,Integer>> list = new ArrayList<Map.Entry<String,Integer>>(map.entrySet());

        Comparator<Map.Entry<String,Integer>> comparator = new Comparator<Map.Entry<String, Integer>>() {
            public int compare(Map.Entry<String, Integer> left, Map.Entry<String, Integer> right) {
                return (left.getValue().compareTo(right.getValue()));
            }
        };
        // 集合預設升序升序
        Collections.sort(list,comparator);

        for(int i=0;i<list.size();i++){// 由高到低輸出
            System.out.println(list.get(list.size()-i-1).getKey() +":"+list.get(list.size()-i-1).getValue());
        }

    }
}