题解 | #简单错误记录#

import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;
import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String fName,num;
        // LinkedList<String> exist = new LinkedList<>();
        LinkedList<String> list = new LinkedList<>();
        HashMap<String,Integer> map = new HashMap<>();
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNext()) { // 注意 while 处理多个 case
            String a = in.nextLine();
            // System.out.println(a.substring(a.lastIndexOf("\\")+1,a.indexOf(' ')));
            if(a.substring(a.lastIndexOf("\\")+1,a.indexOf(' ')).length()<=16){
                fName = a.substring(a.lastIndexOf("\\")+1);
                // num = a.substring(a.indexOf(' ')+1);
            }else{
                fName = a.substring(a.indexOf(' ')-16);
                // num = a.substring(a.indexOf(' ')+1);
            }
            // System.out.println(fName);
            if(!list.contains(fName)){
                if(!map.containsKey(fName)){    //有新的错误
                    map.put(fName,1);
                    list.add(fName);
                    if(list.size()>8){			//检查是否超过8
                        list.removeFirst();
                    }
                }else{
                    continue;
                }
            }else{
                if(map.containsKey(fName)){
                    map.put(fName,map.get(fName)+1);
                }
            }
        }
        // System.out.println(list.toString());
        for(String i : list){
            System.out.println(i+" "+map.get(i));
        }
    }
}