C++ class Solution{ public: /** * @param n: an integer * @return an integer f(n) */ int fibonacci(int n) { // write your code here ,b=; ; i<n; i++) { a = a+b; b = a-b; } return a; } };…
时间限制:1 秒 内存限制:32 兆 特殊判题:否 提交:1923 解决:1378 题目描述: The Fibonacci Numbers{0,1,1,2,3,5,8,13,21,34,55...} are defined by the recurrence: F0=0 F1=1 Fn=Fn-1+Fn-2,n>=2 Write a program to calculate the Fibonacci Numbers. 输入: Each case contains a numb…
/* 1st method will lead to time limit *//* the time complexity is exponential sicne T(n) = T(n-1) + T(n-2) */ class Solution { /** * @param n: an integer * @return an integer f(n) */ public int fibonacci(int n) { // write your code here if (n == 1 ||…