COMPLEJIDAD ESTA

                                                                                //O(1)
    private boolean esta(NodoBin<T> r, T info){                                 //T=1+MAX(1,0)+3+MAX(1,0)+7 = 1+1+3+1+7 = 13
        if(r==null)                                                             //1+MAX
            return (false);                                                     //1
        if(r.getInfo().equals(info))                                        //3+MAX
            return (true);                                                      //1
        return(esta(r.getIzq(),info) || esta(r.getDer(),info));            //7
    }
T=1+MAX(1,0)+3+MAX(1,0)+7
T= 1+1+3+1+7 = 13

T=13

O(1)