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词频统计
使用java完成对txt格式的英文短片进行字符提取及统计。
package nenu.softWareProject;
import java.io.*;
import java.util.*;
public class Test2 {
String filename;
//字符计数
public static int count(String filename,String target) throws FileNotFoundException, IOException {
FileReader fr=new FileReader(filename);
BufferedReader br=new BufferedReader(fr);
StringBuilder strb=new StringBuilder();
while(true){
String line=br.readLine();
if(line==null){
break;
}
strb.append(line);
}
String result=strb.toString();
int count=0;
int index=0;
while(true){
index=result.indexOf(target,index+1);
if(index>0){
count++;
}else{
break;
}
}
System.out.println(target+","+count);
br.close();
return count;
}
public static void main(String[] args) throws FileNotFoundException, IOException {
FileInputStream fis = new FileInputStream("E:\\artical.txt");// 要读的文件路径
InputStreamReader isr = new InputStreamReader(fis);// 字符流
BufferedReader infile = new BufferedReader(isr); // 缓冲
String string;
String file = null;
while ((string = infile.readLine()) != null) {
file += string;
}
String words[];
file = file.toLowerCase();
file = file.replaceAll("[^A-Za-z]", " ");
file = file.replaceAll("\\s+", " ");
words = file.split("\\s+");
String filepath= "E:/artical.txt";
Map<String, Integer> hashMap = new HashMap<String, Integer>();
for (int i = 0; i < words.length; i++) {
String key = words[i];
if (hashMap.get(key) != null) {
int value = http://www.mamicode.com/((Integer) hashMap.get(key)).intValue();
value++;
hashMap.put(key, new Integer(value));
} else {
hashMap.put(key, new Integer(1));
}
Test2.count(filepath,key);
}
}
}
代码运行结果:
never,0
give,1
up,1
never,0
lose,1
hope,1
always,2
have,2
faith,1
it,3
allows,1
you,5
to,1
cope,1
trying,1
times,1
will,4
pass,2
as,3
they,1
always,2
do,1
just,1
have,2
patience,1
your,2
dreams,1
will,4
come,1
true,1
so,1
put,1
on,1
a,17
smile,1
you,5
ll,6
live,1
through,1
your,2
pain,1
know,1
it,3
will,4
pass,2
and,1
strength,1
you,5
will,4
gain,1
代码还存在问题,没有排序,输出有重复字符,改进中
词频统计