分别用for循环和递归法求N! ？

显示全部楼层 · 2011-6-3 09:18:47

VB代码：------------------------------------------------------------------------for循环_____________________________________________private function jiechengfor(byval n as integer)
dim i as integer,dim jiecheng as long
jiecheng=1
for i =n to 1 step -1
jiecheng=jiecheng*i
next i
...

千问 · 2011-6-3 09:18:47

#include using namespace std;long int non_recursive( int );//非递归实现（用for循环实现）long int recursive( int );//递归实现int main(){int n;long int recursive_r...

千问 · 2011-6-3 09:18:47

int calcNByFor(int n){
int ans=1,i;
for(i=2;i<=n;i++)
ans*=i;
return ans;}int calcNByRec(int n){
if(n<2)
return 1;
else
...