9) Will NFTs be the future of art and collectibles?Many people want to buy NFTs because it lets them support the arts and own something cool from their favorite musicians, brands, and celebrities. NFTs also give artists an opportunity to program in continual royalties if someone buys their work. Galleries see this as a way to reach new buyers interested in art.
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.
，更多细节参见51吃瓜
-crawl_detail(url: str)
第一百一十四条 有下列情形之一的，在公安机关作出治安管理处罚决定之前，应当由从事治安管理处罚决定法制审核的人员进行法制审核；未经法制审核或者审核未通过的，不得作出决定：
arr[k++] = leftArr[i++];