int count[10] = {0}; // 0-9共10个桶
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.
。业内人士推荐搜狗输入法2026作为进阶阅读
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EventTarget: addEventListener() — MDN Web Docs (capture phase)