The Fibonacci numbers, commonly denoted F(n) form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones, starting from 0 and 1. That is,
F(0) = 0, F(1) = 1 F(N) = F(N - 1) + F(N - 2), for N > 1.
Given N, calculate F(N).
Example 1:
Input: 2 Output: 1 Explanation: F(2) = F(1) + F(0) = 1 + 0 = 1.
分析:
求斐波那契数列,前两个数为0和1,后面的数依次为前两个数的和,用递归做即可。
class Solution {
public:
int fib(int N) {
int res = 0;
if(N == 0 || N == 1)
return N;
else
return fib(N-1)+fib(N-2);
}
};
本文介绍了一种使用递归算法计算斐波那契数列的方法。斐波那契数列是一种数学序列,其中每个数字是前两个数字的和,从0和1开始。文章提供了一个C++代码示例,展示了如何实现递归函数来计算任意位置N的斐波那契数值。
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