formula to find factorial of number

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What is factorial

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

Sterling Formula-stirling formula (take n factorial approximation)-hdu1018-big number Cattle Network Nowcoder 2018 National

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

Factorial-related issues

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 (mathematical formula) logarithmic low formula

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

Factorial Analysis poj1150 3406 zoj1222 2358

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,

Factorial Analysis poj1150 3406 zoj1222 2358

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,

Factorial correlation algorithm and its C + + implementation

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

Factorial algorithms and their C ++ implementations

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 factorial

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

2nd Chapter The charm of numbers-don't be intimidated by factorial

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

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