12以内阶乘、自然对数e及e的x次方的计算(Factorial)
调试了1个多小时的小程序,突然感觉科学计算不是这么容易的事。说明:1. 不支持12以上的阶乘计算,如,计算13的阶乘时,数字不准确(超过int变量所支持的最大值2147483648而溢出)2. 计算e时,数字越大,计算出的e的精度越高。用12的阶乘计算时,精确度为小数点以后9位,即2.7182818...
(Problem 74)Digit factorial chains
Thenumber145iswellknownforthepropertythatthesumofthefactorialofitsdigitsisequalto145:1!+4!+5!=1+24+120=145Perhapslesswellknownis169,inthatitproducesth...
leetcode:Factorial Trailing Zeroes
Givenaninteger n,returnthenumberoftrailingzeroesin n!.最初的代码classSolution{public:inttrailingZeroes(intn){longlongintfac=1;intcount=0;if(n==0)fac=1;for(...
每天一道LeetCode--172. Factorial Trailing Zeroes
Givenaninteger n,returnthenumberoftrailingzeroesin n!.Note: Yoursolutionshouldbeinlogarithmictimecomplexity.此题是求阶乘后面零的个数。publicclassSolution{publicint...
CERC2017 F: Faulty Factorial 简单数论题
传送门:FaultyFactorial分析:分为n==p,n>=2*p,2*p>n>p,n<p四种情况讨论其中n==p使用到了威尔逊定理,且注意,n=p=2,无解情况不难想,看代码吧#include<iostream>usingnamespacestd;typed...
CERC2017 F: Faulty Factorial 简单数论题
1#include<iostream>2usingnamespacestd;3#definelllonglong4constintN=10000006;5lln,p,r;6llpoww(lla,llb){7llans=1ll;8while(b){9if(b&1)ans=an...