Count Real Numbers

package com.company;


import java.util.*;
import java.util.stream.Collectors;

public class Main {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

//        double [] numbers=Arrays.stream(scanner.nextLine().split(" "))
//                .mapToDouble(Double::parseDouble)
//                .toArray();

        List<Double> nums = Arrays.stream(scanner.nextLine().split(" "))
                .map(Double::parseDouble)
                .collect(Collectors.toList());

        TreeMap<Double, Integer> counts = new TreeMap<>();

        for (Double num : nums) {
            if (!counts.containsKey(num)) {
                counts.put(num, 0);
            }
            counts.put(num, counts.get(num) + 1);
        }
        for (Map.Entry<Double, Integer> entry : counts.entrySet()) {
            System.out.printf("%.0f -> %d%n", entry.getKey(), entry.getValue());
        }


    }

}