@Override
    public double estimateMiceNumber(int nbOcc){
    	double comp = 0;
    	for(int i = b; i <= 32 ; i++){
    		HashMap<String, Integer> t = strTab.get(i);
    		for (String s : t.keySet())
    			if (t.get(s) == nbOcc)
    				comp++;
    				
    	}
    	
    	return comp * Math.pow(2, b);
    }