arr[j + 1] = arr[j]; // 元素后移
В России ответили на имитирующие высадку на Украине учения НАТО18:04
，这一点在heLLoword翻译官方下载中也有详细论述
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.
By this, she means that existing workers will have to start to produce more goods and services per day of work, or else the country will need additional people entering the jobs market, such as potentially through increased immigration.