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Common mathematical basic formulas of recursive and backtracking algorithms
2020-11-06 21:40:00 【Architects who can drive】
Geometric series
Summation formula ：Sn=（ First item - Last item Gongbi ）÷（1- Gongbi ）
General formula : an=a1q^(n-1)
A sequence of equal differences
General formula :an = a1 + (n-1)*d
Summation formula :(a1+an)*n/2
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