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Older people with exceptional memory have a surprisingly high number of young neurons, study finds.
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We still don't know much about the Xiaomi Vision GT. We don't know the details on its powertrain or battery, how fast it goes, or even how much it costs. In its presentation on Sunday, Xiaomi focused on the car's low drag coefficient and how connected it is to the other devices in the company's ecosystem.
Another demo here at MWC showed how you could make the Robot Phone "sleep" by covering its gimbal eye, though it's odd that the camera is still exposed rather than folded away. My main concern with the Robot Phone is the robustness and durability of its robotic mechanisms. We've lived through several waves of smartphones that attempted much simpler mechanical camera functions and the threat of dust or heavy-handed users can't be ignored.
* 解题思路：先对nums2用单调栈求每个元素的下一个更大值，存入Map缓存；再遍历nums1直接查Map得结果