Most ergonomic keyboards fall into two categories: fully split which separates the board into two pieces, and unibody split, also known as an Alice design, which angles the keys outward at the bottom. When the keys are rotated outward or split into two halves, it allows for a wider spread between your elbows for a more relaxed typing position. Other ergonomic features, such as thumb clusters, center tenting and negative tilting are sometimes added to either type of board.
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1. 分解：将数组递归分成两半，直到只剩1个元素
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但Maggie姐仍然骄傲地站在了队伍外面，给经理打了一个电话。这位要去三楼铁板烧吃饭的客人被率先迎进了门。60平米的三楼空无一人，Maggie姐在正中间的位置坐下，那个角度像是坐拥整个三楼，换作以前，每个位置上都坐满了人，滚烫的铁板上滋滋地溅起油沫，客人、小姐、妈咪，构成一幅活色生香的画面、一种生机勃勃的关系。
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