Priority queues are used in many important computer algorithms, in particular graph-based shortest-path algorithms. Somewhat surprisingly, the Microsoft .NET Framework doesn't contain a priority queue ...

From theme parks to banks, priority queues are spreading for those with enough money or status. This could be a sign of greater efficiency – or just another way of splitting society.

A priority queue is a data structure that holds information that has some sort of priority value. When an item is removed from a priority queue, it's always the item with the highest priority.