Что думаешь? Оцени!
The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
，推荐阅读同城约会获取更多信息
Half of flood defences – around 100,000 - are maintained by the Environment Agency and 9% of those are currently below their target condition. Each defence is given a score out of five they must achieve depending on their importance.，详情可参考同城约会
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The US-based British content creator, who does not disclose his last name, says he has around 60,000 members in his server on Discord, an online chat service popular with gamers.