Range queries ask "what's inside this box?" But sometimes the question is "what's nearest to this location?" This is the nearest neighbor problem, and you don't know how big your search radius should be. The nearest point might be right next to you or far away.
Юлия Сычева (корреспондент)
，这一点在WPS官方版本下载中也有详细论述
for (int32_t i = 0; i < data.length; i++) {
Фото: Павел Львов / РИА Новости