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一点数学

  • 作者: leenldk
  • 时间: 2019-10-09
  • 分类: theory

主定理

形如 $$ T(n) = a\cdot T(\frac{n}{b}) + f(n)$$
若$$f(n) = O(n^{log_b a-\epsilon})$$,则 $$T(n) = \Theta(n^{log_b a}) $$
若$$f(n) = O(n^{log_b a}\cdot log^k n)$$,则$$ T(n) = \Theta(n^{log_b a} log^{k+1} n) $$

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