SortR.java

import java.util.*;

/**
 * @author Chathura Widanage
 */
public class SortR {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        String line;
        Map<Float,String> mapping=new HashMap<>();//assuming there won't be any similar cor coefficients
        while((line=scanner.nextLine())!=null && !line.equals("exit")){
            String sub=line.substring(5,line.length()-1);
            String parts[]=sub.split("  -> ");
            mapping.put(Float.parseFloat(parts[0]),parts[1]);
        }
        List<Float> kets=new ArrayList<>(mapping.keySet());
        Collections.sort(kets);
        Collections.reverse(kets);
        kets.forEach(key->{
            System.out.println(String.format("%s [%f]",mapping.get(key),key));
        });
    }
}