formula to find factorial of number

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Factorial is an operational symbol invented by Kiston Kaman (Christian kramp,1760~1826) in 1808 and is a mathematical term. A positive integer.factorialEnglishfactorial) is the product of all positive integers less than and equal to the number, and

Recently a pile of questions to fill, has been salted fish, fill a pile of water problems are not necessary to write a problem. Forget about this formula.The meaning of the Stirling formula is that when n is large enough, n! is very difficult to

Definition:A positive integer.factorialEnglishfactorial) is the product of all positive integers less than and equal to the number, and has a 0 factorial of 1. The factorial writing n! of the natural number N. namely N!=1x2x3x...xn. Factorial can

LightOJ-1045 Digits of factorial Time Limit: 2000MS Memory Limit: 32768KB 64bit IO Format: %lld &%llu Submit StatusDescriptionFactorial of an integer was defined by the following

There are several types of factorial problems: 1. Calculate the number of 0 at the end of the factorial, divide it by 5, and accumulate. 2. How many digits are there in the result of factorial? STIRLING formula: n! ≈ SQRT (2 * pI * n) * (N/E) ^ N,

There are several types of factorial problems: 1. Calculate the number of 0 at the end of the factorial, divide it by 5, and accumulate. 2. How many digits are there in the result of factorial? stirling formula: n! ≈ Sqrt (2 * PI * n) * (n/e) ^ n,

The algorithm of factorial is more than two aspects: first, high precision computation and the second is related to number theory. First, the high precision calculation factorial This is actually the least technical content of the problem, but

The factorial algorithm involves two aspects: high-precision calculation and number theory. I. High-Precision computing factorial This is actually the least technical problem, but it is often used, so you have to write and optimize its

Find the number of digits of a number factorialFlyfish 2015-8-15For example 7! =5040, the factorial result of 7 is 4 digits (10 binary)Ask for a number of digits1 Loop methodint get_digit_loop(int N) { int0; do { digit ++; while100

Don't be intimidated by factorial. DescriptionFactorial (factorial) is a very interesting function, but a lot of people are afraid of it, let's look at two factorial-related problems:Question 1. Given an integer n, then the factorial n of n! How