int Query(String START, String END, int genderPreference) { if (genderPreference == 1) { return avlMale.lesserThan(END) - avlMale.lesserThan(START); } else if (genderPreference == 2) { return avlFemale.lesserThan(END) - avlFemale.lesserThan(START); } else { // Last case genderPreference == 0 return (avlMale.lesserThan(END) - avlMale.lesserThan(START)) + (avlFemale.lesserThan(END) - avlFemale.lesserThan(START)); } }