sieve method to find prime numbers

Title: Ask for prime numbers Content: Try to write a program that finds the first n prime numbers. This is not a problem if there is no further requirement. But in this hope, from the known, using the method of division, the fastest way to write the program. My solution:

1 PackageCom.company;2 3 Public classMain {4 5 Public Static voidMain (string[] args) {6 //Write your code here7System.out.println ("HelloWorld");8 inti;9 intJ;Ten for(i=100;i//cyclic i=100~200 One for(j=2;j//cyclic j=2~200 A if(i% j==0) {//I can be determined by J. - Break; - } the } - if(I==J) {//determine the same number of I and J, and the number of daffodils, when I

The prime number refers to the factor is only 1 and its own numbers (1 is not prime), the solution of prime numbers in mathematics is very extensive, and the solution of the prime number within N is also the problem we often encou

Prime number refers to the factor is only 1 and its own numbers (1 is not prime), the solution of prime numbers in mathematics is widely used, and the solution of the prime number within N is also our programming often encountered

Using 6n±1 method to calculate prime numberAny natural number can always be expressed as one of the following forms:6n,6n+1,6n+2,6n+3,6n+4,6n+5 (n=0,1,2, ...)Obviously, when the n≥1, 6n,6n+2,6n+3,6n+4 are not prime, only the shape such as 6n+1 and 6n+5 natural numbers are likely to be

', Flen); flag[0]=flag[1]=' s ';//Exclude 0 and 1 for(intI=2;i*i for(intJ=i*i;j' n '; }//Probe The possible steps of the next prime number from the current prime if(i==2)//2 Special: The distance to 3 is 1.{i++;Continue; }one of the//2,4,6i+=2;if(flag[i]==' n ')//2 was marked.{i+=2;if(flag[i]==' n ')//4 was marked before.i+=2; } }returnFlag;}intMainintargcChar*argv[]) {intflen=10000;Char* FLS

Evaluate the prime number using the 6N ± 1 MethodAny natural number can always be expressed as one of the following forms:6N, 6N + 1, 6N + 2, 6N + 3, 6N + 4, 6N + 5 (N = 0, 1, 2 ,...)Obviously, when N is ≥1, 6N, 6N + 2, 6N + 3, 6N + 4 are not prime numbers, only the natural numbers such as 6N + 1 and 6N + 5 may be

Explanation of the method for determining prime numbers (cyclic structure java) in C Language experimentsExplanation of Problem Description using the method of determining prime numbers (cyclic structure java) in C Language experi

PHPHeader("content-type:text/html; Charset=utf-8 "); /*a number, if only 1 and its own two factors, such a number is called prime (or prime). For example 2,3,5,7 is a prime number, while 4,6,8,9 is not, the latter is called a composite or composite. The most common way to determine whether a natural number is a prime