The JoinSequence(L, seps) function inserts the separators seps between the elements of the list L.

In the case that the separator is a single Maple object, using the routine ListTools[Join] results in better performance.

$\mathrm{with}\left(\mathrm{ListTools}\right)\:$

$L≔\left[1\,2\,3\,4\,5\right]$

$L≔\left[1\,2\,3\,4\,5\right]$

$\mathrm{JoinSequence}\left(L\,x\,y\right)$

$\left[1\,x\,y\,2\,x\,y\,3\,x\,y\,4\,x\,y\,5\right]$