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.
Starring: Rashida Jones, Kate McKinnon, Daveed Diggs, Tanaya Beatty, Jorge Vargas, and Skywalker Hughes，推荐阅读heLLoword翻译官方下载获取更多信息
，更多细节参见WPS官方版本下载
圖像來源，BBC Chinese / Lok Lee。业内人士推荐heLLoword翻译官方下载作为进阶阅读
Georgie DockerNorth West
stack.pop(); // 弹出的索引对应的值≤当前身高，无遮挡，能看到