c++ - sum of all the elements in an array in less than O(n) -

-

i tried adding places , odd places in loop add both final answer making complexity o(n/2) need better way

you manage array , update sum when there changes. shifts time modifying operations , technically calculate (or not) sum in 0 time.


Comments

Post a Comment

Popular posts from this blog

asp.net - 'System.Web.HttpContext' does not contain a definition for 'GetOwinContext' Mystery -

-
i realize question might seem trivial some, it's these types of things find myself fighting quite bit , want make sense of despite seeming losing battle in .net (for me anyway). so, if following: using system.web; ... applicationuser user = system.web.httpcontext.getowincontext().getusermanager<applicationusermanager>().findbyid(system.web.httpcontext.user.identity.getuserid()); that produces error in title , red getowincontext() , error cannot resolve symbol 'getowincontext()' however, if following (remove system.web in front of httpcontext ), works expected (or @ least no errors): using system.web; ... applicationuser user = httpcontext.getowincontext().getusermanager<applicationusermanager>().findbyid(system.web.httpcontext.user.identity.getuserid()); however, if (same line that's working using system.web commented out): //using system.web; ... applicationuser user = httpcontext.getowincontext().getusermana...
Read more

yii2 - Yii 2 Running a Cron in the basic template -

-
i have seen instructions on running cron in advanced template, cant figure out how on basic template. have following controller in basic controllers folder. <?php namespace app\controllers; use yii\console\controller; /** * cron controller */ class croncontroller extends controller { public function actionindex() { echo "cron service runnning"; } public function actionmail($to) { echo "sending mail " . $to; } } i have navigated root of application , tried these comands yii cron php yii cron im getting unknown comand "cron" i know old question failed find actual answer this. if @ code yii exec file you'll notice requires /common/config/aliases.php file console/config/main.php. can naturally change these or copy on these advanced template. hope solves problem wanting same thing.
Read more

javascript - jQuery DataTable responsive doesnt work with Boostrap 3 -

-
i having problems responsive layout when use datatable js plugin. wont show if there responsive: true. tried manipulate css (white-space: nowrap) isnt solution. here preview of code. html <table id="example1" class="table table-bordered table-striped"> <thead> <tr> <th class="no-sort"></th> <th>product</th> <th>product category</th> <th>views</th> <th>average view time</th> </tr> </thead> <tbody> <tr> <td class="text-center">1</td> <td>accu-pass suture shuttle</td> <td>suture shuttle</td> <td>1,500 views</td> <td>8:38 minutes</td> </tr> </tbody> </table> js $('#example1').datatab...
Read more