题解 | #简单错误记录#

import java.util.Scanner;

import java.util.Map;
import java.util.LinkedHashMap; 

// 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);
        Map<String, Integer> m = new LinkedHashMap<String, Integer>();
        while(in.hasNextLine()){
            String record = in.nextLine();
            String[] parts = record.split("\\\\");
            String realRecord = parts[parts.length-1];
            String name = realRecord.split(" ")[0];
            String number = realRecord.split(" ")[1];
            if(name.length()>16) name = name.substring(name.length()-16, name.length());
            String result = name +" "+ number;
            if(m.containsKey(result)){
                m.replace(result, m.get(result)+1);
            }else{
                m.put(result,1);
            }
        }

        int cnt = m.size();
        int i = 1;
        for(Map.Entry<String, Integer> e: m.entrySet()){
            if(i > cnt-8) System.out.println(e.getKey()+" "+e.getValue());
            i++;
        }

    }
}