斐波拉且數列——牛客

對於斐波拉且數列是個很經典的編程題目，問題描述爲： f ( x ) = { = 0 n = 0 = 1 n = 1 = f ( n − 1 ) + f ( n − 2 ) n > 1 f(x)=\left\{ \begin{aligned} & = 0 &n=0\\ & = 1 &n=1\\ & = f(n-1)+f(n-2) &n>1

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