查找文本文件中重复次数最多的单词的程序

2025 年 1 月 8 日 | 阅读 5 分钟

说明

在此程序中，我们需要查找给定文本文件中重复次数最多的单词。这可以通过使用文件指针以读取模式打开文件来完成。逐行读取文件。一次将一行拆分并存储在数组中。遍历数组并查找每个单词的频率，然后将频率与maxcount进行比较。如果频率大于maxcount，则将频率存储在maxcount中，并将相应的单词存储在word变量中。程序中使用的data.txt文件的内容如下所示。

计算机程序是当计算机执行时执行特定任务的指令集合。

计算机需要程序才能运行。

计算机程序通常由计算机程序员以编程语言编写。

一组计算机程序、库和相关数据统称为软件。

计算机程序可以按功能进行分类，例如应用软件和系统软件。

算法

变量maxCount将存储重复次数最多的单词的计数。
使用文件指针以读取模式打开文件。
从文件中读取一行。将每一行转换为小写字母并删除标点符号。
将该行拆分为单词并将其存储在数组中。
使用两个循环遍历数组。外部循环选择需要计数的单词。内部循环将选定的单词与数组中的其余单词进行匹配。如果找到匹配项，则计数加1。
如果计数大于maxCount，则将计数的值存储在maxCount中，并将相应的单词存储在word变量中。
最后，maxCount将保存最大计数，而word变量将保存重复次数最多的单词。

解决方案

Python

count = 0;
word = "";
maxCount = 0;
words = [];
 
#Opens a file in read mode
file = open("data.txt", "r")
    
#Gets each line till end of file is reached
for line in file:
    #Splits each line into words
    string = line.lower().replace(',','').replace('.','').split(" ");
    #Adding all words generated in previous step into words
    for s in string:
        words.append(s);
 
#Determine the most repeated word in a file
for i in range(0, len(words)):
    count = 1;
    #Count each word in the file and store it in variable count
    for j in range(i+1, len(words)):
        if(words[i] == words[j]):
            count = count + 1;
            
    #If maxCount is less than count then store value of count in maxCount
    #and corresponding word to variable word
    if(count > maxCount):
        maxCount = count;
        word = words[i];
        
print("Most repeated word: " + word);
file.close();

输出

 Most repeated word: computer

C

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
 
int main()
{   
    FILE *file;
    char ch, *line;
    size_t len = 0, read;
    char words[1000][1000], word[20];
    int i = 0, j, k, maxCount = 0, count;
    
    //Opens file in read mode
    file = fopen("data.txt","r");
    
    //If file doesn't exist
    if (file == NULL){
        printf("File not found");
        exit(EXIT_FAILURE);
    }
    
    //Since, C doesn't provide in-built function, 
    //following code will split content of file into words
    while ((read = getline(&line, &len, file)) != -1) {
        
        for(k=0; line[k]!='\0'; k++){
            //Here, i represents row and j represents column of two-dimensional array words 
            if(line[k] != ' ' && line[k] != '\n' && line[k] != ',' && line[k] != '.' ){
                words[i][j++] = tolower(line[k]);
            }
            else{
                words[i][j] = '\0';
                //Increment row count to store new word
                i++;
                //Set column count to 0
                j = 0;
            }
        }
    }
    
    int length = i;
    
    //Determine the most repeated word in a file
    for(i = 0; i < length; i++){
        count = 1;
        //Count each word in the file and store it in variable count
        for(j = i+1; j < length; j++){
            if(strcmp(words[i], words[j]) == 0 && (strcmp(words[i]," ") != 0)){
                count++;
            } 
        }
        //If maxCount is less than count then store value of count in maxCount 
        //and corresponding word to variable word
        if(count > maxCount){
            maxCount = count;
            strcpy(word, words[i]);
        }
    }
    
    printf("Most repeated word: %s", word);
    fclose(file);
    
    return 0;
}

输出

Most repeated word: computer

JAVA

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.ArrayList;
 
public class MostRepeatedWord {
    
    public static void main(String[] args) throws Exception {
        String line, word = "";
        int count = 0, maxCount = 0;
        ArrayList<String> words = new ArrayList<String>();
        
        //Opens file in read mode
        FileReader file = new FileReader("data.txt");
        BufferedReader br = new BufferedReader(file);
        
        //Reads each line
        while((line = br.readLine()) != null) {
            String string[] = line.toLowerCase().split("([,.\\s]+)");
            //Adding all words generated in previous step into words
            for(String s : string){
                words.add(s);
            }
        }
        
        //Determine the most repeated word in a file
        for(int i = 0; i < words.size(); i++){
            count = 1;
            //Count each word in the file and store it in variable count
            for(int j = i+1; j < words.size(); j++){
                if(words.get(i).equals(words.get(j))){
                    count++;
                } 
            }
            //If maxCount is less than count then store value of count in maxCount 
            //and corresponding word to variable word
            if(count > maxCount){
                maxCount = count;
                word = words.get(i);
            }
        }
        
        System.out.println("Most repeated word: " + word);
        br.close();
    }
}

输出

Most repeated word: computer

C#

using System;
using System.Collections;
 
public class MostRepeatedWord
{    
    public static void Main()
    {
        String line, word = "";
        int count = 0, maxCount = 0;
        ArrayList words = new ArrayList();
        
        //Opens file in read mode
        System.IO.StreamReader file = new System.IO.StreamReader(@"data.txt"); 
        
        //Reads each line
        while((line = file.ReadLine()) != null){
            String[] string1 = line.ToLower().Split(new Char [] {',' , '.',' '},StringSplitOptions.RemoveEmptyEntries);
            //Adding all words generated in previous step into words
            foreach(String s in string1){
                words.Add(s);
            }
        }
        
        //Determine the most repeated word in a file
        for(int i = 0; i < words.Count; i++){
            count = 1;
            //Count each word in the file and store it in variable count
            for(int j = i+1; j < words.Count; j++){
                if(words[i].Equals(words[j])){
                    count++;
                } 
            }
            //If maxCount is less than count then store value of count in maxCount 
            //and corresponding word to variable word
            if(count > maxCount){
                maxCount = count;
                word = (String) words[i];
            }
        }
        
        Console.WriteLine("Most repeated word: " + word);
        file.Close();
    }
}

输出

Most repeated word: computer

PHP

<!DOCTYPE html>
<html>
<body>
<?php
$word = "";
$count = $maxCount = 0;
$words = array();
 
//Opens file in read mode
$file = fopen("data.txt", "r");
 
//Reads each line
while (($line = fgets($file)) !== false) {
    $line = strtolower($line);
    $line = str_replace(',' ,'', $line);
    $line = str_replace('.', '', $line);
    $string = explode(' ', $line);
    
    //Adding all words generated in previous step into words
    for($i = 0; $i < count($string); $i++){
        array_push($words, $string[$i]);
    }
}
 
//Determine the most repeated word in a file
for($i = 0; $i < count($words); $i++){
    $count = 1;
    //Count each word in the file and store it in variable count
    for($j = $i+1; $j < count($words); $j++){
        if($words[$i] == $words[$j]){
            $count++;
        } 
    }
    //If maxCount is less than count then store value of count in maxCount 
    //and corresponding word to variable word
    if($count > $maxCount){
        $maxCount = $count;
        $word = $words[$i];
    }
}
 
print("Most repeated word: " . $word);
fclose($file);
?>
</body>
</html>

输出

Most repeated word: computer

下一主题#

查找文本文件中重复次数最多的单词的程序

说明

算法

解决方案

Python

C

JAVA

C#

PHP

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程序

查找文本文件中重复次数最多的单词的程序

说明

算法

解决方案

Python

C

JAVA

C#

PHP

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