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The challenge involves mathematics. Also consider using more specific tags: [number] [number-theory] [arithmetic] [combinatorics] [graph-theory] [geometry] [abstract-algebra].

1
vote
c#, 238, 202 bytes double d(double[]a){Array.Reverse(a);var s=new Stack<double>(a);int i=0,j;while(s.Count>1){double l=s.Pop(),r=s.Pop();j=i++%5;s.Push(j==0?l+r:j==1?l-r:j==2?l*r:j==3?l/r:Math.Pow(l, …
answered Jun 16 '16 by display_name
1
vote
PHP, 206,198,197 bytes function f($a){while(count($a)>1){$l=array_shift($a);$r=array_shift($a);array_unshift($a,($j=$i++%5)==0?($l+$r):($j==1?($l-$r):($j==2?($l*$r):($j==3?($l/$r):(pow($l,$r))))));}r …
answered Jun 17 '16 by display_name