2017.5.29&30

个人反思

既然是假期那就先把个人反思放在前面~
这两天讲真也是很日常颓废了，说好的赶ddl呢？
自从腿受伤之后便有理由宅在寝室，生活节奏陡然变慢
而且不理各种ddl自顾自地玩，更难得地打了一会游戏
估计接下来ddl一多就更没有时间了
珍惜当下 思考未来

个人所获

对书签的整理

【不定期更新】个人收藏夹

为了方便pre试玩了下爬虫

安静地做只小爬虫~

Java作业处理

作业描述

有一个文本文件，内容为学生成绩，每行一个学生，每行格式为 [姓名] [分数]，请使用java读取该文件，并按照成绩排序输出。

完成情况

• main.java

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;

public class main {
    public static void main (String [] args){
        File data = new File("Read'n'sort\\src\\main\\data.txt");
        BufferedReader reader = null;
        ArrayList  thelist = new ArrayList ();
        try{
            InputStreamReader isr = new InputStreamReader(new FileInputStream(data), "GBK");
            reader = new BufferedReader(isr);
            String tempString = null;
            int line = 1;

            while((tempString = reader.readLine())!=null){

                //System.out.println("line"+line+": " + tempString);
                int n = 0;
                char tempchar;
                String tempName = "";
                String tempScore = "";


                try{
                    while(true) {
                        tempchar = tempString.charAt(n);
                        n++;
                        if(tempchar == ' ') break;
                        tempName += tempchar;
                    }
                }
                catch(StringIndexOutOfBoundsException e){}
                try{
                    while(true) {
                        tempchar = tempString.charAt(n);
                        tempScore += tempchar;
                        n++;
                    }
                }
                catch(StringIndexOutOfBoundsException e){}
                finally{
                    int temp = 0;
                    try{
                        temp = Integer.parseInt(tempScore);
                    }
                    catch(NumberFormatException e){

                    }
                    info now = new info();
                    now.setting(tempName,temp);
                    thelist.add(now);
                }
                line++;
            }

            System.out.print("sort by grade:\n");
            Collections.sort(thelist, new SortByGrade());
            for(int i = 0;i < thelist.size(); i ++){
               thelist.get(i).print();
            }

        } catch(IOException e){
            e.printStackTrace();
        } finally{
            if(reader != null){
                try{
                    reader.close();
                } catch(IOException e1){}
            }
        }
    }
}

• info.java

public class info {
    info(){
        name = null;
        score = 0;
    }
    void setting(String names , int scores){
        name = names;
        score = scores;
    }

    int getGrade(){
        return score;
    }

    String getName(){
        return name;
    }

    void print(){
        System.out.println(name+": "+score);
    }

    String name;
    int score;
}

• SortByGrade.java

import java.util.Comparator;

class SortByGrade implements Comparator {
    public int compare(Object o1, Object o2) {
        info s1 = (info) o1;
        info s2 = (info) o2;
        if (s1.getGrade() < s2.getGrade())
            return 1;
        return -1;
    }
}