HJ19 简单错误记录 | 题解

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

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        Map<String, Integer> map = new LinkedHashMap<>();
        while (in.hasNext()) {
            String str = in.next();
            String[] strs = str.split("\\\\");
            String file = strs[strs.length - 1];
            int line = in.nextInt();
            if (file.length() > 16) {
                file = file.substring(file.length() - 16);
            }
            String key = file + " " + line;
            int num = 1;
            if (map.containsKey(key)) {
                map.put(key, map.get(key) + 1);
            } else {
                map.put(key, num);
            }
        }
        int cnt = 0;
        for (String s : map.keySet()) {
            cnt++;
            if (cnt > map.keySet().size() - 8) {
                System.out.println(s + " " + map.get(s));
            }
        }
    }
}