why value of factorial 0 1

Factorial is a very interesting function, but many people are afraid of it. Let's look at two problems related to Factorial: 1. Given an integer N, the factorial n of n! How many zeros are there at the end? Example: n = 10, n! = 3 628 800, n! There

Factorial (factorial) is a very interesting function, but many people are afraid of it, let's take a look at two factorial-related problems: 1, given an integer n, then n's factorial n! How many 0 at the end? For example: n=10,n! =3 628 800,n! Has

Factorial is a very interesting function, but many people are afraid of it. Let's look at two problems related to Factorial: 1. Given an integer N, the factorial N of N! How many zeros are there at the end? Example: N = 10, N! = 3 628 800, N! There

Two factorial Problems Two questions about factorial This article introduces two problems related to the factorial operation. Remember, the factorial result cannot be calculated because it will overflow. Do not convert it to a string because it is

Rotate ArrayThis topic Harvest:Topic:Rotate an array of n elements to the right by K steps.For example, with n = 7 and k = 3, the array is [1,2,3,4,5,6,7] rotated to [5,6,7,1,2,3,4] .Ideas:My idea: Create a new array to hold the rotated content, but

　　source : "Algorithmic Competition Primer Classic" Example 5.2.2　　title : Input not more than 1000 positive integer n, output n!=1*2*3*...*n accurate results.　　Example input : 30　　Sample Output : 265252859812191058636308480000000　　analysis : To

One, function-type programming Create a function A function is composed of the keyword Def, with the function name and the parentheses colon, and the arguments in parentheses, when you want to execute the function, just write the function name and

New students in computer science often find it difficult to understand the concept of recursive programming. Recursive thinking is difficult because it is very much like cyclic reasoning ( circular reasoning ). It is also not an intuitive process;

function to understand the purpose of a function Passing arguments to a function Understand the importance of the variable scope of a function Writing a custom function Returning a value from a function To create a recursive function with

Http://www.ibm.com/developerworks/cn/linux/l-cn-awkf/ Wen Quan (saphires@sohu.com), software engineer, Jie Si Rui Technology (Beijing) Co., Ltd. Introduction:This article introduces the global variable pollution in awk starting with two incorrect