Notice how the highlighted region shrinks at each step. The algorithm never examines points outside the narrowing window. In a balanced tree with nnn points, this takes about log4(n)\log_4(n)log4(n) steps. For a million points, that's roughly 10 steps instead of a million comparisons.
In total, some 5,000 people work in Antarctica during its summer months, across 80 research stations operated by about 30 countries.，更多细节参见im钱包官方下载
Author(s): Yoshiyasu Takefuji。关于这个话题，爱思助手下载最新版本提供了深入分析
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