function sumFibs(num) { //return num; var arr = [1,1]; var add = 2; while(true){ var item = arr[0] + arr[1]; if(num < item){ return add; } if(item % 2){ add += item; } arr[0] = arr[1]; arr[1] = item; } } sumFibs(4);…

题目 给一个正整数num,返回小于或等于num的斐波纳契奇数之和. 斐波纳契数列中的前几个数字是 1.1.2.3.5 和 8,随后的每一个数字都是前两个数字之和. 例如,sumFibs(4)应该返回 5,因为斐波纳契数列中所有小于4的奇数是 1.1.3. 提示 此题不能用递归来实现斐波纳契数列.因为当num较大时,内存会溢出,推荐用数组来实现. 参考文档:博客园,Issue Remainder 测试用例 sumFibs(1) 应该返回一个数字. sumFibs(1000) 应该返回 1785.…

Sum All Odd Fibonacci Numbers 1.要求 给一个正整数num,返回小于或等于num的斐波纳契奇数之和. 斐波纳契数列中的前几个数字是 1.1.2.3.5 和 8,随后的每一个数字都是前两个数字之和. 此题不能用递归来实现斐波纳契数列.因为当num较大时,内存会溢出,推荐用数组来实现. 2.思路 利用for循环得出斐波纳契数前一百个数组成的数列arr 用.filter()按顺序提出arr中的所有奇数 利用for循环计算小于或等于num的斐波纳契奇数之和 3.代码 fun…

In mathematical terms, the sequence Fn of Fibonacci numbers is defined by the recurrence relation F1 = 1; F2 = 1; Fn = Fn - 1 + Fn - 2 (n > 2). DZY loves Fibonacci numbers very much. Today DZY gives you an array consisting of n integers: a1, a2, ...,…

C. DZY Loves Fibonacci Numbers time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output In mathematical terms, the sequence Fn of Fibonacci numbers is defined by the recurrence relation F1 = 1; F2 …

C. DZY Loves Fibonacci Numbers time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output In mathematical terms, the sequence Fn of Fibonacci numbers is defined by the recurrence relation F1 = 1; F2 …

參考:http://www.cnblogs.com/chanme/p/3843859.html 然后我看到在别人的AC的方法里还有这么一种神方法,他预先设定了一个阈值K,当当前的更新操作数j<K的时候,它就用一个类似于树状数组段更的方法,用一个 d数组去存内容,譬如它要在区间 [3,6]上加一段fibonacci 原来: id 0 1 2 3 4 5 6 7 8 9 10 d  0 0 0 0 0 0 0 0 0 0 0 更新: id 0 1 2 3 4 5 6  7  8  9 10 d  0…

Fibonacci Numbers Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 81 Accepted Submission(s): 46   Problem Description The Fibonacci sequence is the sequence of numbers such that every element is e…

Given an integer N, you have to print the sum of odd numbers and even numbers form 1 to N Input:First line consists of T test cases. First line of every test case consists of a Single integer N. Output:Single line output, with sum of odd numbers and…

Portal Description 给出一个\(n(n\leq3\times10^5)\)个数的序列,进行\(m(m\leq3\times10^5)\)次操作,操作有两种: 给区间\([L,R]\)加上一个斐波那契数列,即\(\{a_L,a_{L+1},...,a_R\} \rightarrow \{a_L+F_1,a_{L+1}+F_2,...,a_R+F_{R-L+1}\}\) 询问区间\([L,R]\)的和,对\(10^9+9\)取模. 斐波那契数列:\(F_1=1,F_2=2\)且满足…