A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
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The Mini is a bite-sized version of The New York Times' revered daily crossword. While the crossword is a lengthier experience that requires both knowledge and patience to complete, The Mini is an entirely different vibe.
This is the fourth episode but it's only been six minutes into the show because each episode is just 120 seconds. And rather than being a cliffhanger, this is how the episode opens.
2025年，淘宝闪购、京东、美团掀起的外卖大战，搅动着整个餐饮行业的营收。这场以流量争夺为核心的战役中，平台大额补贴与品牌低价策略相互叠加，既推动瑞幸外卖订单激增，也带来成本高企、利润率下滑的挑战。