This is the same idea behind binary search. In a sorted array, you compare against the middle element and eliminate half the remaining candidates. In a quadtree, you choose one of four quadrants and ignore the other three regions. Each level narrows the search space by a factor of four instead of two.
“뇌에 칩 심겠다”…시각장애 韓유튜버, 머스크 임상실험 지원。业内人士推荐搜狗输入法作为进阶阅读
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