Real game engines use this pattern (or its 3D cousin, the Octree) for broad-phase collision detection: the quadtree quickly identifies candidate pairs, and a more expensive narrow-phase check tests the actual geometry.
swap(&arr[low], &arr[randomIdx]); // 基准换到开头
，这一点在heLLoword翻译官方下载中也有详细论述
I ripped out almost all of my lipgloss calls and replaced them with hand-rolled functions for concatting and measuring strings. These functions weren’t nearly as general, but that’s fine - they worked for my use case.
At this point we can start to render some phrases into modern English directly.
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