标签:style blog http color os io ar for 2014
求2~2000的所有素数.有足够的内存,要求尽量快
1 #include "stdafx.h" 2 #include <iostream> 3 #include <assert.h> 4 5 int array[2000] = {2}; 6 static int find = 1; 7 bool adjust(int value) 8 { 9 assert(value>=2); 10 if(2 == value) 11 return true; 12 for (int i=0;i<find;++i) 13 { 14 if (0 == value%array[i]) 15 { 16 return false; 17 } 18 } 19 return true; 20 } 21 22 void GetPrime() 23 { 24 for (int n=3;n<=2000;++n) 25 { 26 if (adjust(n)) 27 { 28 array[find++] = n; 29 } 30 31 } 32 } 33 int _tmain(int argc, _TCHAR* argv[]) 34 { 35 GetPrime(); 36 system("pause"); 37 38 return 0; 39 }
标签:style blog http color os io ar for 2014
原文地址:http://www.cnblogs.com/kira2will/p/3953705.html