- 子节点i的父节点: (i-1)/2
It’s hard to overstate the role that Wi-Fi plays in virtually every facet of life. The organization that shepherds the wireless protocol says that more than 48 billion Wi-Fi-enabled devices have shipped since it debuted in the late 1990s. One estimate pegs the number of individual users at 6 billion, roughly 70 percent of the world’s population.
，这一点在同城约会中也有详细论述
铁路部门回应「半夜候补成功 1700 元车票作废」
Овечкин продлил безголевую серию в составе Вашингтона09:40