Treningsoppgave, Collections_LF

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
public class WeightProgram {
     
    private Map<String,List<Double>> weightLogs = new HashMap<String,List<Double>>();
     
    public WeightProgram () {
         
        initializeLogs(weightLogs);
    }
     
    public String biggestLooser() {
         
        String looserName = null;
        double highestLoss = Double.NEGATIVE_INFINITY;
         
        for (Map.Entry<String, List<Double>> entry : weightLogs.entrySet()) {
             
            List<Double> log = entry.getValue();
             
            double initialWeight = log.get(0);
            double currentWeight = log.get(log.size()-1);
             
            double prosentageWeightLoss = 100 - ((100/initialWeight)*currentWeight);
             
            if(prosentageWeightLoss > highestLoss) {
                looserName = entry.getKey();
                highestLoss = prosentageWeightLoss;
            }
        }
        return looserName;
    }
     
    private void initializeLogs(Map<String,List<Double>> map) {
    	List<Double> log1 = new ArrayList<Double>();
    	List<Double> log2 = new ArrayList<Double>();
    	List<Double> log3 = new ArrayList<Double>();
        
    	log1.add(95.0);
        log1.add(93.1);
        log1.add(87.9);
         
        log2.add(123.0);
        log2.add(119.1);
        log2.add(115.9);
         
        log3.add(102.0);
        log3.add(100.1);
        log3.add(98.3);

        weightLogs.put("OlaNor", log1);
        weightLogs.put("PerSpe", log2);
        weightLogs.put("EspAsk", log3);
    }
}