57個挑戰(python+java)-lesson45

上題目：

python版本

#關于count 函數，主要計算字元串在字元中出現的次數，參考https://www.runoob.com/python/att-string-count.html
#關于replace 函數，主要把字元串做替代，參考 https://www.runoob.com/python/att-string-replace.html

class WordFinder:
    replacedic = {"utilize":"use","should":"can"}
    filename =""  

    def Getinput(this):
          filename = input("Please provide the name of the file")
          this.filename = filename


    def Transform(this):
        fo = open(this.filename+"cg","w")
        with open(this.filename,'r') as f:
            line = f.readline()
            number = 0
            while line:
                #print(line.replace('utilize','use'))
                #fo.write(line.replace('utilize','use'))
                str,num = this.replace(line)
                number = number + num
                fo.write(str)
                line = f.readline()
        f.close()
        fo.close()
        print("We have produce {0} number of replacements".format(number))

    def replace(this,str):
        num = 0
        for key in this.replacedic:
            num = num + str.count(key)
            str = str.replace(key,this.replacedic[key])
        # print("we have produce {0} replacements".format(num))
        return str,num

lesson45 = WordFinder()
lesson45.Getinput()
lesson45.Transform()           

感覺python版本靈活一點，寫的比較快。

看到一共做了5次修改，修改後的文檔在1.txtcg 中

java 版本

import java.util.HashMap;
import java.util.Scanner;
import java.util.regex.Pattern;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.regex.*;

/*
  // 1. 周遊hashmap 資料 :  參考 https://www.runoob.com/java/java-hashmap.html
 * for (Integer i : Sites.keySet()) {
            System.out.println("key: " + i + " value: " + Sites.get(i));
        }

  // 2. 讀檔案
    File file = new File(filename);
    FileInputStream fis = new FileInputStream(file);
    InputStreamReader isr = new InputStreamReader(fis,"UTF-8");
    BufferedReader br = new BufferedReader(isr);
    String line;
     while((line = br.readLine() )!= null)
        {
            System.out.println(line);
        }

  // 3.寫檔案
   BufferedWriter out = new BufferedWriter(new FileWriter(filename+"java"));
   out.write(str+"\n");
   out.close();

  //4.查找檔案
 **
 * 擷取指定字元串出現的次數
 * 
 * @param srcText 源字元串
 * @param findText 要查找的字元串
 * @return
 
public static int appearNumber(String srcText, String findText) {
    int count = 0;
    Pattern p = Pattern.compile(findText);
    Matcher m = p.matcher(srcText);
    while (m.find()) {
        count++;
    }
    return count;
}
 */


public class WordFinder {
    HashMap<String,String>  replacedic = new HashMap<String,String>();
    String filename = "";
    Scanner sc = new Scanner(System.in);
    int replacenumber=0;

    void GetInput()
    {
        System.out.println("Please provide the name of the file");
        filename = sc.nextLine();

    }

    void Transform() throws IOException{
        File file = new File(filename);
        FileInputStream fis = new FileInputStream(file);
        InputStreamReader isr = new InputStreamReader(fis,"UTF-8");
        BufferedReader br = new BufferedReader(isr);
        String line;
        // 這裡增加内容，通過字柄寫入内容
        BufferedWriter out = new BufferedWriter(new FileWriter(filename+"java"));
        while((line = br.readLine() )!= null)
        {
            //System.out.println(line);
            String str = this.replacemystr(line);
            //System.out.println(str);
            out.write(str+"\n");
        }
        fis.close();
        isr.close();
        out.close();
        System.out.print("Totally we have modified " + replacenumber +" files");
    }

    String replacemystr(String str){
        replacedic.put("utilize","use");
        replacedic.put("should","can");

        for (String a: replacedic.keySet()){
            replacenumber = replacenumber + appearNumber(str,a);
            //System.out.println("The replacementnumber is " + replacenumber);
            str = str.replace(a,replacedic.get(a));
        }
        return str;
    }

    public static int appearNumber(String srcText, String findText) {
        int count = 0;
        Pattern p = Pattern.compile(findText);
        Matcher m = p.matcher(srcText);
        while (m.find()) {
            count++;
        }
        return count;
    }


    public static void main(String[] args) throws IOException{
        WordFinder lesson45 = new WordFinder();
        lesson45.GetInput();
        lesson45.Transform();

    }

}           

效果圖：

java 版本利用周末弄了下，感覺還是比較麻煩，代碼比較長一點

java版本

運作效果圖