The drawback to the Sofort 2 is that it’s twice the price of the Evo. It’s challenging to recommend at $399, as most people would likely consider the differences between the two cameras relatively minor. The Leica user interface is easier to navigate, though, and I appreciate the included lens cap and extended two-year warranty. I also appreciate that it lets you print photos taken with other Leica cameras via the companion app — a nice perk for Leica fans. Nonetheless, I don’t think those perks are enough to justify spending nearly $200 more.
栈（stack）是先进后出的数据结构。单调栈在入栈时通过一定规则保持栈内元素有序（单调递增或单调递减），从而把「找左侧/右侧第一个更大/更小元素」从 O(n²) 降到 O(n)。
Силовые структуры。搜狗输入法下载是该领域的重要参考
Фото: Evelyn Hockstein / Reuters。旺商聊官方下载对此有专业解读
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"Your mind is all over the place," said her husband Kam Sangha. "You're thinking 'how can this happen in less than 24 hours?'。业内人士推荐同城约会作为进阶阅读