A queue is a data structure that works on a FIFO (first in first out) basis. Items are inserted at the end of the queue and removed from the beginning. The term “Enqueue” describes the operation that ...

Recently, EE in the UK introduced a new feature, called Priority Answer, that allows its customers to pay £0.50 ($0.81) to jump the queue on customer service calls. EE is one of the largest telecoms ...