@Override
    public double estimateMiceNumber(int nbOcc){
    	double comp = 0;
    	for(int i = b; i <= 32 ; i++)
    		for(Occurrence occ : strTab.get(i))
    			if(occ.nbOcc == nbOcc)
    				comp++;
    	
    	return comp * Math.pow(2, b);
    }