the Beeching axe

This algorithm is difficult to implement with a standard queue, but with a deque it's easy.

Tin comes from Kochiu, about twenty miles from the French port of Mengtsz, and about 5,000 tons are exported annually.

Bare-chested children and their parents gathered in doorways, on roofs and in windows as he passed, watched warily by Brazilian troops carrying submachine guns. - New York Times, 09/03/2007 http://www.nytimes.com/2007/03/09/world/americas/09cnd-prexy.html?ref=world