04. Count Real Numbers

package Lekciq;

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Scanner;

public class CountRealNumbers {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);


        String input = scanner.nextLine();
        String[] numbers = input.split(" ");

        // Map to store the count of each number
        Map<Double, Integer> countMap = new LinkedHashMap<>();

        // Iterate over the numbers array and count occurrences
        for (String number : numbers) {
            double num = Double.parseDouble(number);
            countMap.put(num, countMap.getOrDefault(num, 0) + 1);
        }

        // Print the result
        for (Map.Entry<Double, Integer> entry : countMap.entrySet()) {
            double num = entry.getKey();
            int count = entry.getValue();
            System.out.printf("%.1f -> %d\n", num, count);
        }
    }
}