示例 var scores = [24, 32, 17]; // A数组 var arrayLength = scores.length;// 数组的长度 //当i<arrayLength时,可以按顺序访问数组中的值 for (var i = 0; i < arrayLength; i++) { var B=scores[i];//调用数组中的值 println(B) } function println(a) { document.write(a+"<br>"
程序分析:抓住分子与分母的变化规律:分子a:1,2,3,5,8,13,21,34,55,89,144...分母b:2,3,5,8,13,21,34,55,89,144,233...分母b把数赋给了分子a,同时自己与分母的和(a+b)变成新分子赋给分母b. 代码: #include<stdio.h> int main() { , b = , i, j, n; float s = 0.0; printf("请输入项数:\n"); scanf_s("%d",
In the math class, the evil teacher gave you one unprecedented problem! Here f(n) is the n-th fibonacci number (n >= 0)! Where f(0) = f(1) = 1 and for any n > 1, f(n) = f(n - 1) + f(n - 2). For example, f(2) = 2, f(3) = 3, f(4) = 5 ... The teacher u
程序说明:求Fibonacci数列前m个中偶数位的数: 这是编译原理作业,本打算写 求Fibonacci数列前m个数:写了半天,不会写,就放弃了: 程序代码如下: var n1,n2,m,i; procedure panduan; begin i:=2; while i<m do begin n1:=n1+n2; n2:=n1+n2; i:=i+1; write(n2); end; end; begin read(m); n1:=1; n2:=1; if m=2 then write(n1,n2
--第3题 利用循环求n的阶乘 --参数检查是否是自然数 function IsNaturalNumber(n) ~= )then return false else return true end end function factorial(n) --参数检查 if(not IsNaturalNumber(n))then print("参数有误") return end --若输入的是0直接返回1 )then end --输入的是正整数 local res = , - do res
A. Olympiad time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The recent All-Berland Olympiad in Informatics featured n participants with each scoring a certain amount of points. As the head
C语言的课后习题 求数列:2/1,3/2,5/3,8/5,13/8,21/13,...前50项的和 数列规律: 第二项的分母是[前一项分子] 第二项的分子是[前一项分子与分母的和] from fractions import Fraction def fn(x): """ 计算每一项的值 """ time = 1 fz = 2 fm = 1 if x == 1:return fz / fm #if x == 1:return Fraction(f
for循环方式求交集 #!/usr/bin/env python #coding:utf-8 #取交集 #定义两个序列对象,求alist与blist对象的交集元素 alist = [2,9,3,4,5,6,7,8] blist = [9,2,1,10,33,2,3] #定义一个空list对象,放最终的结果 reslut = [] #遍历alist对象 for x in alist: if x in blist: #如果alist对象中有元素在blist对象里则添加到reslut对象 reslut