【第二周】Java实现英语文章词频统计（改进1）

class WordAndNum{
    public String word;
    public int num;
}

BufferedReader in=new BufferedReader(new FileReader("D:\test.txt"));
String line=null;
while((line=in.readLine())!=null)

ArrayList<WordAndNum> list=new ArrayList<WordAndNum>();

int index1=0;
int index2 = 0;
//截取英文单词
index1=line.indexOf(" ");
String word=line.substring(0,index1);
WordAndNum wdn=new WordAndNum();
wdn.word=word;
wdn.num=1;
list.add(wdn);
for(int i=index1+1;i<line.length();i++){
　　 if(line.charAt(i)==','||line.charAt(i)=='.'||line.charAt(i)==';'||line.charAt(i)==' '||line.charAt(i)=='?'){
        index2=i;
        WordAndNum wdn2=new WordAndNum();
        word=line.substring(index1+1,index2);
        wdn2.word=word;
        boolean flag=falsefor(int j=0;j<list.size();j++){
            if(list.get(j).word.equals(word)){
                wdn2.num=list.get(j).num+1;
                list.set(j, wdn2);
                flag=true;
                break;
            }
        }
        if(flag==false){
            wdn2.num=1;
            list.add(wdn2);
        }
        index1=index2;
    }
}

//冒泡排序
for(int i=0;i<list.size();i++){
     for(int j=0;j<list.size()-i-1;j++){
      if(list.get(j).num<list.get(j+1).num){
          WordAndNum wd1=list.get(j);
          WordAndNum wd2=list.get(j+1);
          list.set(j, wd2);
          list.set(j+1, wd1);
          }
     }
}

 1 package ruan.jian.gong.cheng;
 2 
 3 import java.io.BufferedReader;
 4 import java.io.FileReader;
 5 import java.util.ArrayList;
 6 
 7 class WordAndNum{
 8     public String word;
 9     public int num;
10 }
11 
12 public class wordNum2 {
13     public static void main(String[] args) {
14         try{
15             BufferedReader in=new BufferedReader(new FileReader("D:\test.txt"));
16             String line=null;
17             ArrayList<WordAndNum> list=new ArrayList<WordAndNum>();
18             while((line=in.readLine())!=null){
19                 int index1=0;
20                 int index2 = 0;
21                 //截取英文单词
22                 index1=line.indexOf(" ");
23                 String word=line.substring(0,index1);
24                 WordAndNum wdn=new WordAndNum();
25                 wdn.word=word;
26                 wdn.num=1;
27                 list.add(wdn);
28                 for(int i=index1+1;i<line.length();i++){
29                     if(line.charAt(i)==','||line.charAt(i)=='.'||line.charAt(i)==';'||line.charAt(i)==' '||line.charAt(i)=='?'){
30                         index2=i;
31                         WordAndNum wdn2=new WordAndNum();
32                         word=line.substring(index1+1,index2);
33                         wdn2.word=word;
34                         boolean flag=false;
35                         for(int j=0;j<list.size();j++){
36                             if(list.get(j).word.equals(word)){
37                                 wdn2.num=list.get(j).num+1;
38                                 list.set(j, wdn2);
39                                 flag=true;
40                                 break;
41                             }
42                         }
43                         if(flag==false){
44                             wdn2.num=1;
45                             list.add(wdn2);
46                         }
47                         index1=index2;
48                     }
49                 }
50             }
51             //冒泡排序
52             for(int i=0;i<list.size();i++){
53                 for(int j=0;j<list.size()-i-1;j++){
54                     if(list.get(j).num<list.get(j+1).num){
55                         WordAndNum wd1=list.get(j);
56                         WordAndNum wd2=list.get(j+1);
57                         list.set(j, wd2);
58                         list.set(j+1, wd1);
59                     }
60                 }
61             }
62             for(int i=0;i<list.size();i++){
63                 System.out.println(list.get(i).word+"==="+list.get(i).num);
64             }
65         }catch(Exception e){
66             e.printStackTrace();
67         }
68         
69     }
70 }