import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Paths;

import java.util.*;

/**

* @author xiaobai

* @description

* @date 2022-03-16 15:46

*/

public class WordStatistics {

public void readFile() throws IOException {

// 创建一个FileInputStream对象:

String s = Files.readString(Paths.get("./README1.md"));

String[] sArr = s.split(" ");

Map<String, Integer> map = new TreeMap<>();

for (String str : sArr) {

String s1 = str.toLowerCase();

Integer num = map.get(s1);

map.put(s1, num == null ? 1 : num + 1);

}

map = sortDescend(map);

map.forEach((i,j)-> {

System.out.println(i + " " + j);

});

}

public static <K, V extends Comparable<? super V>> Map<K, V> sortDescend(Map<K, V> map) {

List<Map.Entry<K, V>> list = new ArrayList<>(map.entrySet());

Collections.sort(list, new Comparator<Map.Entry<K, V>>() {

@Override

public int compare(Map.Entry<K, V> o1, Map.Entry<K, V> o2) {

int compare = (o1.getValue()).compareTo(o2.getValue());

return -compare;

}

});

Map<K, V> returnMap = new LinkedHashMap<K, V>();

for (Map.Entry<K, V> entry : list) {

returnMap.put(entry.getKey(), entry.getValue());

}

return returnMap;

}

public static void main(String[] args) {

try {

new WordStatistics().readFile();

} catch (IOException e) {

e.printStackTrace();

}

}

}