题解 | #简单错误记录#

import java.util.*;

class b {
    String fileName;
    int line;
    b(){}
    b(String fileName, int line) {
        this.fileName = fileName;
        this.line = line;
    }

    public String getFileName() {
        return fileName;
    }

    public void setFileName(String fileName) {
        this.fileName = fileName;
    }

    public int getLine() {
        return line;
    }

    public void setLine(int line) {
        this.line = line;
    }


    @Override
    public String toString() {
        return "(fileName:" + fileName + ", line:" + line + ")";
    }

    @Override
    public int hashCode() {
        return Objects.hash(fileName,line);
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof b)) {
            return false;
        }
        b b = (b) o;
        return b.fileName.equals(this.fileName) && b.line == this.line;
    }
}

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Map<b,Integer> map = new LinkedHashMap<>(100);
        while (sc.hasNext()) {
            String str = sc.nextLine();
            String[] s = str.split(" ");
            // 行号
            int line = Integer.parseInt(s[1]);
            String[] split = s[0].split("\\\\");
            // 全名
            String fileName = split[split.length - 1];
            String name = fileName.length() > 16 ? fileName.substring(fileName.length() - 16) : fileName;

            b b = new b(name, line);
            map.put(b, map.getOrDefault(b,0) + 1);

        }
        // 输出
        List<Map.Entry<b, Integer>> entries = new ArrayList<>(map.entrySet());
        int len = entries.size();
        int j = 0;
        if (len > 8) {
            j = len - 8;
        }
        for (; j < len; j++) {
            Map.Entry<b, Integer> e = entries.get(j);
            b b = e.getKey();
            System.out.println(b.getFileName() + " " + b.getLine() + " " + e.getValue());
        }
    }

}