目錄

前言

一、C++

二、Java

三、JavaScript

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前言

斐波那契函數求和，難度為入門級，本文提供了以下三種語言的核心代碼。

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一、C++

class Solution { public:int Fibonacci(int n){if(n == 0 || n == 1)return n;int a = 0, b = 1, c = 0;for(int i = 2; i < n + 1; i++){c = a + b;a = b;b = c;}return c;} };

二、Java

public class Solution {public int Fibonacci(int n){if (n == 0 || n == 1)return n;int a = 0, b = 1, c = 0;for(int i = 2; i <= n; i++){c = a + b;a = b;b = c;}return c;} }

三、JavaScript

function Fibonacci(n) {// 0 1 1 2 3 5 8if (n == 0 || n == 1)return n;var a = 0, b = 1, c;for(let i = 2; i <= n; i++){c = a + b;a = b;b = c;}return c;//return Fibonacci(n - 1) + Fibonacci(n - 2) }

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