课堂测试-统计单词个数和字母出现频率

testtwo.class

package classthird;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.text.DecimalFormat;
import java.util.HashMap;
import java.util.Map;




public class testtwo {
    public Map<String,Integer> map1=new HashMap<String,Integer>();
    public static void main(String arg[]) {
        test("D:\\Test\\a.txt");
        
        
        
    }
    public static void test(String path) {
         try {
                char shu[] = new char[1000];//存储单个字母内容
                char zimu[] = new char[26];//存储字母‘a-z’
                String h1[]=new String[1000];    //存储原文内容
                String word3[]=new String[1000];    //存储单词
                String word4[]=new String[1000];    //存储单词
                String word5[]=new String[1000];    //存储单词
                int countword[]=new int[1000];
                int countwordtwo=0;
                double count[]=new double[26];
                int j=0;
                String pathname=path;
                File filename=new File(pathname);
                InputStreamReader reader=new InputStreamReader(new FileInputStream(filename));
                BufferedReader br=new BufferedReader(reader);
                String line[]=new String[100];;    
                for(int i=0;i<line.length;i++)
                {
                    line[i]=br.readLine();    
                }
                br.close();
                int k=0;
                 while(line[k]!=null) 
                 {
                     for(int i=0;i<line[k].length();i++) 
                     {                                
                          shu[j]=line[k].charAt(i);
                          j++;                     
                     }
                     k++;
                }
                for(int i=0;i<shu.length;i++) 
                {
                     switch(shu[i]) {
                     case 'a':zimu[0]='a';count[0]++;break;
                     case 'b':zimu[1]='b';count[1]++;break;
                     case 'c':zimu[2]='c';count[2]++;break;
                     case 'd':zimu[3]='d';count[3]++;break;
                     case 'e':zimu[4]='e';count[4]++;break;
                     case 'f':zimu[5]='f';count[5]++;break;
                     case 'g':zimu[6]='g';count[6]++;break;
                     case 'h':zimu[7]='h';count[7]++;break;
                     case 'i':zimu[8]='i';count[8]++;break;
                     case 'j':zimu[9]='j';count[9]++;break;
                     case 'k':zimu[10]='k';count[10]++;break;
                     case 'l':zimu[11]='l';count[11]++;break;
                     case 'm':zimu[12]='m';count[12]++;break;
                     case 'n':zimu[13]='n';count[13]++;break;
                     case 'o':zimu[14]='o';count[14]++;break;
                     case 'p':zimu[15]='p';count[15]++;break;
                     case 'q':zimu[16]='q';count[16]++;break;
                     case 'r':zimu[17]='r';count[17]++;break;
                     case 's':zimu[18]='s';count[18]++;break;
                     case 't':zimu[19]='t';count[19]++;break;
                     case 'u':zimu[20]='u';count[20]++;break;
                     case 'v':zimu[21]='v';count[21]++;break;
                     case 'w':zimu[22]='w';count[22]++;break;
                     case 'x':zimu[23]='x';count[23]++;break;
                     case 'y':zimu[24]='y';count[24]++;break;
                     case 'z':zimu[25]='z';count[25]++;break;
                     case 'A':zimu[0]='a';count[0]++;break;
                     case 'B':zimu[1]='b';count[1]++;break;
                     case 'C':zimu[2]='c';count[2]++;break;
                     case 'D':zimu[3]='d';count[3]++;break;
                     case 'E':zimu[4]='e';count[4]++;break;
                     case 'F':zimu[5]='f';count[5]++;break;
                     case 'G':zimu[6]='g';count[6]++;break;
                     case 'H':zimu[7]='h';count[7]++;break;
                     case 'I':zimu[8]='i';count[8]++;break;
                     case 'J':zimu[9]='g';count[9]++;break;
                     case 'K':zimu[10]='k';count[10]++;break;
                     case 'L':zimu[11]='l';count[11]++;break;
                     case 'M':zimu[12]='m';count[12]++;break;
                     case 'N':zimu[13]='n';count[13]++;break;
                     case 'O':zimu[14]='o';count[14]++;break;
                     case 'P':zimu[15]='p';count[15]++;break;
                     case 'Q':zimu[16]='q';count[16]++;break;
                     case 'R':zimu[17]='r';count[17]++;break;
                     case 'S':zimu[18]='s';count[18]++;break;
                     case 'T':zimu[19]='t';count[19]++;break;
                     case 'U':zimu[20]='u';count[20]++;break;
                     case 'V':zimu[21]='v';count[24]++;break;
                     case 'W':zimu[22]='w';count[22]++;break;
                     case 'X':zimu[23]='x';count[23]++;break;
                     case 'Y':zimu[24]='y';count[24]++;break;
                     case 'Z':zimu[25]='z';count[25]++;
                     }
                }    
                int ci=0;
                double sum=0;
                double a1;
                double max=0;
                DecimalFormat df = new DecimalFormat( "0.00");    
                System.out.println("短文中各字母出现情况统计如下：");
                for(int i=0;i<26;i++) {
                    if(count[i]!=0) {
                        sum+=count[i];
                    }
                }///求字母总数
                for (int x = 0; x < 26 - 1; x++) {
                    for (int y = x + 1; y < 26; y++) {
                        if (count[x] > count[y]) {
                            double temp = count[x];
                            count[x] = count[y];
                            count[y] = temp;
                            char temp1=zimu[x];
                            zimu[x] = zimu[y];
                            zimu[y] = temp1;
                        }
                    }
                }
                for(int i=0;i<26;i++)
                {            
                    if(count[i]!=0) 
                    {
                        ci++;
                        a1=count[i]/sum*100;
                        System.out.println(ci+".字母"+zimu[i]+"的出现频率是:"+df.format(a1)+"%");   
                    }
                }
                
                System.out.println("字母共计："+sum+"个");
                for(int i=0;i<shu.length;i++) 
                {
                    h1[i] = String.valueOf(shu[i]);
                }
                int msg1=0;
                int count1=0; //判断单词个数
                String word2 ="";
                for(int i=0;i<shu.length;i++) 
                {
                    
                    if((shu[i]>='a'&&shu[i]<='z')||(shu[i]>='A'&&shu[i]<='Z')) 
                    {    
                        word2+=h1[i];
                    }else
                    {
                        msg1=1;  
                    }
                    if(word3[i]==" ") 
                    {                //考虑标点加空格的情况
                        msg1=0;        //msg1初始化
                        word3[i]="";
                        continue;    //跳出循环
                    }
                    if(msg1==1) 
                    {                    //如果中间出现非字母
                        word3[i]=word2;    //word2存入数组
                        word2="";       //word2初始化
                        msg1=0;            //msg1初始化
                        
                    }
                    if(word3[i]==null) 
                    {     //判断为空，防止空指针
                        msg1=0;                //msg1初始化
                        word3[i]="空";
                        continue;            //跳出循环
                    }
                    if(word3[i]=="") 
                    {     //判断为空，防止空指针
                        msg1=0;                //msg1初始化
                        word3[i]="空";
                        continue;            //跳出循环
                    }
                    if(word3[i].length()==1) 
                    {                                //若长度为一，是单字母不为单词
                        msg1=0;                        //msg1初始化
                        word3[i]="";
                        continue;                    //跳出循环
                    }
                    //System.out.println(word3[i]);
                    word4[count1]=word3[i];
                    count1++;
                    if(word3[i]==""&&word3[i-1]=="") 
                    {
                        break;
                    }
                }
                
                for(int i=0;i<word4.length;i++)
                {
                    if(word4[i]!=null) {
                        //System.out.println(word4[i]);
                    }else {
                        break;
                    }
                }
                int thought_a=0;
                for(int i=0;i<word4.length;i++)
                {
                    word5[thought_a]=word4[i];
                }
               
            }catch (Exception e) 
            {
                e.printStackTrace();
            }
    }
    public void daoru(String path) throws IOException
    {
        
        File a=new File(path);
        FileInputStream b = new FileInputStream(a);
        InputStreamReader c=new InputStreamReader(b,"UTF-8");
        String string2=new String();
        while(c.ready())
        {
            char string1=(char) c.read();
            if(!isWord(string1))
            {
                if(map1.containsKey(string2))
                {
                    Integer num1=map1.get(string2)+1;
                    map1.put(string2,num1);
                }
                else
                {
                    Integer num1=1;
                    map1.put(string2,num1);
                }
                string2="";
            }
            else
            {
                string2+=string1;
            }
        }
        if(!string2.isEmpty())
        {
            if(map1.containsKey(string2))
            {
                Integer num1=map1.get(string2)+1;
                map1.put(string2,num1);
            }
            else
            {
                Integer num1=1;
                map1.put(string2,num1);
            }
            string2="";
        }
        c.close();
        b.close();
    }
    public void testthird(String path) {
        String sz[];
        Integer num[];
        final int MAXNUM=10; //统计的单词出现最多的前n个的个数
        sz=new String[MAXNUM+1];
        num=new Integer[MAXNUM+1];
        testtwo tt=new testtwo();
        int account =1;
        //Vector<String> ve1=new Vector<String>();
        try {
            tt.daoru(path);
        } catch (IOException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        }
        System.out.println("英文单词的出现情况如下:");
        int g_run=0;

        for(g_run=0;g_run<MAXNUM+1;g_run++)
        {
            account=1;
            for(Map.Entry<String,Integer> it : tt.map1.entrySet())
            {
                if(account==1)
                {
                    sz[g_run]=it.getKey();
                    num[g_run]=it.getValue();
                    account=2;
                }
                if(account==0)
                {
                    account=1;
                    continue;
                }
                if(num[g_run]<it.getValue())
                {
                    sz[g_run]=it.getKey();
                    num[g_run]=it.getValue();
                }
                //System.out.println("英文单词: "+it.getKey()+" 该英文单词出现次数: "+it.getValue());
            }
            tt.map1.remove(sz[g_run]);
        }
        int g_count=1;
        String tx1=new String();
        for(int i=0;i<g_run;i++)
        {
            if(sz[i]==null)
                continue;
            if(sz[i].equals(""))
                continue;
            tx1+="出现次数第"+(g_count)+"多的单词为:"+sz[i]+"\t\t\t出现次数: "+num[i]+"\r\n";
            System.out.println("出现次数第"+(g_count)+"多的单词为:"+sz[i]+"\t\t\t出现次数: "+num[i]);
            g_count++;
        }
        try {
            tt.daochu(tx1);
        } catch (IOException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        }
    }
    public void daochu(String txt) throws IOException
    {
        File fi=new File("tongji.txt");
        FileOutputStream fop=new FileOutputStream(fi);
        OutputStreamWriter ops=new OutputStreamWriter(fop,"UTF-8");
        ops.append(txt);
        ops.close();
        fop.close();
    }
    
    public boolean isWord(char a)
    {
        if(a<='z'&&a>='a'||a<='Z'&&a>='A')
            return true;
        return false;
    }
    public void testthird1(String name) {
        // TODO Auto-generated method stub
        
    }
    
}

testthird.class

package classthird;

import java.io.File;
import java.io.IOException;

import classthird.testtwo;
public class TestThird {
     public static void main(String[] args) throws IOException {
         
             testtwo tt=new testtwo();
            File file = new File("D:\\Test");

            String strArray[] = file.list();
            for (String s : strArray) {
                System.out.println("文件名：" + s);
            }
            System.out.println("-----------------------------");
            File fileArray[] = file.listFiles();
            for (File f : fileArray) {
                //System.out.println("文件名：" + f.getName());
                String thought_a;
                thought_a=f.getCanonicalPath();
                tt.test(thought_a);
                tt.testthird(thought_a);
            }
        }
}