面试题5

package com.maoge;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.*;

public class  {
    public static void main(String args[]) throws IOException {
        List<String> lines = Files.readAllLines(Paths.get("D:\IDEA\workspace\file\info.txt"));

        Map map = new HashMap();

        for (String line : lines) {
            dealLine(map, line);
        }

        sortResult(map);
    }

    static class User {
        public String name;
        public int value;

        public User(String name, int value) {
            this.name = name;
            this.value = value;
        }

    }

    public static void dealLine(Map map, String line) {
        if (!"".equals(line.trim())) {
            String[] info = line.split(",");
            String name = info[1];
            Integer value = (Integer) map.get(name);
            if (value == null) value = 0;
            map.put(name, value + 1);
        }
    }

    ("unchecked")
    public static void sortResult(Map map) {
        TreeSet set = new TreeSet(
                new Comparator() {
                    @Override
                    public int compare(Object o1, Object o2) {
                        User u1 = (User) o1;
                        User u2 = (User) o2;
                        if (u1.value < u2.value) {
                            return -1;
                        } else if (u1.value > u2.value) {
                            return 1;
                        } else {
                            return u1.name.compareTo(u2.name);
                        }
                    }
                }
        );

        Iterator iterator = map.keySet().iterator();
        while (iterator.hasNext()) {
            String name = (String) iterator.next();
            Integer value = (Integer) map.get(name);
            if (value > 1) {
                set.add(new User(name, value));
            }
        }

        printResults(set);

    }

    public static void printResults(TreeSet set) {
        Iterator iterator = set.iterator();
        while (iterator.hasNext()) {
            User user = (User) iterator.next();
            System.out.println(user.name + "  " + user.value);
        }
    }
}