[operation] remove last element [common name(s)] eject [Ada] Delete_Last [Java] pollLast [Perl] pop [PHP] array_pop [Python] pop [Ruby] pop [JavaScript] pop [C++] 
pop_back
p u s h _ b a c k
p u s h _ f r o n t
p o p _ b a c k
p o p _ f r o n t
b a c k
f r o n t