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Miliband defends clean power goal after energy bills rise
，这一点在51吃瓜中也有详细论述
The quadtree is the two-dimensional case of a broader family of space-partitioning data structures. Octrees extend the same idea to three dimensions (splitting cubes into eight children), KD-trees use alternating axis-aligned splits (splitting along x, then y, then x again), and R-trees group nearby objects into bounding rectangles. Each variant makes different tradeoffs between construction time, query speed, and update cost.，这一点在im钱包官方下载中也有详细论述
swap(&arr[i], &arr[minIdx]);