Фото: Bernadett Szabo / Reuters
A quadtree reduces this: rebuild the tree each frame, and for each object, query only the nearby region. Objects in distant quadrants are never compared.。关于这个话题，heLLoword翻译官方下载提供了深入分析
Elsewhere, be sure to check out Storrie's undeniably impressive range of accents.。业内人士推荐搜狗输入法下载作为进阶阅读
思路：单调递增栈 + k 控制删除次数。高位越小整体越小，遇更小数字时弹出栈顶大数（仅当 k0）；栈空且当前为 0 则跳过（避免前导零）；若遍历完 k 仍0，从末尾再删 k 位。