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package com.javarush.task.task19.task1920;
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package com.javarush.task.task19.task1920; | |
import java.io.BufferedReader; | |
import java.io.FileReader; | |
import java.io.IOException; | |
import java.util.Map; | |
import java.util.TreeMap; | |
import java.util.stream.Collectors; | |
/* | |
Самый богатый | |
*/ | |
public class Solution { | |
public static void main(String[] args) { | |
try (BufferedReader br = new BufferedReader(new FileReader(args[0]))) { | |
br.lines() | |
.map(line -> line.split(" ")) | |
.collect(Collectors.toMap(e -> e[0], e -> Double.parseDouble(e[1]), Double::sum)) | |
.entrySet() | |
.stream() | |
.collect(Collectors.groupingBy(Map.Entry::getValue, TreeMap::new, | |
Collectors.mapping(Map.Entry::getKey, Collectors.toList()))) | |
.lastEntry() | |
.getValue() | |
.stream() | |
.sorted() | |
.forEach(System.out::println); | |
} catch (IOException e) { | |
throw new RuntimeException(e); | |
} catch (NullPointerException ignored) { | |
} | |
} | |
} |
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Для каждого имени посчитать сумму всех его значений.
Вывести в консоль имена в алфавитном порядке, у которых максимальная сумма.
Пример входного файла:
Петров 0.501
Иванов 1.35
Петров 0.85
Пример вывода:
Петров