package com.javarush.task.task10.task1016; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.Map; /* Одинаковые слова в списке */ public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); ArrayList<String> words = new ArrayList<>(); for (int i = 0; i < 20; i++) { words.add(reader.readLine()); } Map<String, Integer> map = countWords(words); for (Map.Entry<String, Integer> pair : map.entrySet()) { System.out.println(pair.getKey() + " " + pair.getValue()); } } public static Map<String, Integer> countWords(ArrayList<String> list) { HashMap<String, Integer> result = new HashMap<>(); //напишите тут ваш код for (int i = 0; i < 20; i++) { int count = Collections.frequency(list, list.get(i)); result.put(list.get(i), count); } return result; } }