取石子游戏 Time Limit: 2000/1000 MS(Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2101 Accepted Submission(s): 1205 Problem Description 1堆石子有n个,两人轮流取.先取者第1次可以取任意多个,但不能全部取完.以后每次取的石子数不能超过上次取子数的2倍.取完者胜.先取者负输出"Secondwin".先取者…
1. 斐波那契 from itertools import islice def fib(): a, b = 0, 1 while True: yield a a, b = b, a+b print list(islice(fib(), 5)) # [0, 1, 1, 2, 3] 2. for……else……用法(以查找素数为例) 正常版本: def print_prime(n): for i in xrange(2, n): found = True for j in xrange(2, i)…
Pandigital Fibonacci ends The Fibonacci sequence is defined by the recurrence relation: F[n] = F[n-1] + F[n-2], where F[1] = 1 and F[2] = 1. It turns out that F541, which contains 113 digits, is the first Fibonacci number for which the last nine digi…
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 …
在学递归的时候,用递归实现了一个 下面是代码 def fib(n): if n >= 3: return fib(n-1)+fib(n-2) else: return 1 print(fib(6)) 发现一个很严重的问题:当数字比较小的时候还好,但是当求30以后的数字的时候,就会运行特别长的时间 所以请看下面一种方法 while True: def fib(n): result = [1,1] for i in range(n-2): result.append(result[-2]+resul…
刚刚学习了 斐波那契数列,整理一下思路,写个博文给未来的学弟学妹参考一下,希望能够帮助到他们 永远爱你们的 ----新宝宝 经历过简单的学习之后,写出一个比较简单的代码,斐波那契数列:具体程序如下: 1: # Fibonacci series: 斐波纳契数列 # 两个元素的总和确定了下一个数 a, b = 0, 1 while b < 10: print(b) a, b = b, a+b 执行上面的代码会得到: 这个例子介绍了几个新特征. 第一行包含了一个复合赋值:变量 a 和 b 同时得到新值…
斐波那契数列就是黄金分割数列 第一项加第二项等于第三项,以此类推 第二项加第三项等于第四项 代码如下 这一段代码实现fib(n)函数返回第n项,PrintFN(m,n,i)函数实现输出第i项斐波那契数列,输出在m到n之间的斐波那契数的数量 def fib(n) : x = 0 x1 = 1 x2 = 1 i = 2 while i <= n : i = i + 1 x =x1 + x2 x1 = x2 x2 =…
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…