Now that we can build the tree, let's use it to search. Finding a specific point means starting at the root and asking: which child quadrant contains this coordinate? Then you recurse into that child and ask again. Each level of the tree cuts the search space by roughly three-quarters.
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Fincke, 58, is a Pennsylvania native with a wife and three children. He joined NASA in 1996 and is now a veteran of four spaceflights: Expedition 9 in 2004, Expedition 18 in 2009, STS-134 in 2011, and most recently Expedition 74, for which he served as commander.
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旅行中,一些外国人成为中国新故事的讲述者。格里夫妇在重庆旅行期间,拍摄制作了多条短视频,既有李子坝奇特的“单轨穿楼”,也有错落有致的立交桥,展现了山城的现代风貌。