tag:blogger.com,1999:blog-9084082.post9126940743775261454..comments2009-11-05T10:33:48.141+08:00Comments on 4wei-diary: [ C/C++ ] Powers Of Two by C++4wei-diarynoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-9084082.post-85393188511956652272009-11-05T10:33:04.569+08:002009-11-05T10:33:04.569+08:00嗯 ~ left shift 的確比較省 ~~
int main()
{
int N;
...嗯 ~ left shift 的確比較省 ~~<br /><br />int main()<br />{<br /> int N;<br /> int x = 2;<br /> int y;<br /> cin >> N;<br /> y = x << N-1;<br /> cout << " Result : " << y << endl;<br />}4wei-diaryhttp://www.blogger.com/profile/02516988947590548194noreply@blogger.comtag:blogger.com,1999:blog-9084082.post-45547267022931413382009-11-04T23:05:18.428+08:002009-11-04T23:05:18.428+08:00直接 shift bit 會不會比較快呢?
000000010 2
000000100 4
以下略....直接 shift bit 會不會比較快呢?<br />000000010 2<br />000000100 4<br />以下略...subineruhttp://www.blogger.com/profile/14836208341196268989noreply@blogger.com