题解 | #简单错误记录#

import java.util.*;
//
// 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) {
        LinkedHashMap<String, Integer> map = new LinkedHashMap<>();
        Queue<String> queue = new LinkedList<>();
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) { // 注意 while 处理多个 case
            String s = in.nextLine();
            String fileNameAndNum = getFileNameAndNum(s);
            if (!map.containsKey(fileNameAndNum)) {
                int cnt = 1;
                map.put(fileNameAndNum, cnt);
            } else {
                int temp = map.get(fileNameAndNum);
                map.replace(fileNameAndNum, ++temp);
            }
        }
        queue.addAll(map.keySet());
        if (queue.size() <= 8) {
            for (String key : map.keySet()) {
                System.out.println(key + " " + map.get(key));
            }
        } else {
            while (queue.size() > 8) {
                queue.remove();
            }
            for (String key : queue) {
                System.out.println(key + " " + map.get(key));
            }
        }
    }
    //处理文件名，如果超过16个字符要进行处理
    public static String getFileNameAndNum(String s) {
        String[] split = s.split("\\\\");
        String fileNameAndNum = split[split.length - 1];
        String[] fileNameAndNumSplit = split[split.length - 1].split("\\s");
        String fileName = fileNameAndNumSplit[0];
        if (fileName.length() > 16) {
            fileNameAndNum = fileName.substring(fileName.length() - 16,
                                                fileName.length()) + " " + fileNameAndNumSplit[1];
        }
        return fileNameAndNum;
    }
}