Beam search: is a heuristic search algorithm that is an optimization of best-first search that reduces its memory requirement. Beam stack search: integrates backtracking with beam search. Best-first search: traverses a graph in the order of likely importance using a priority queue. Bidirectional search: find the shortest path from an initial vertex to a goal vertex in a directed graph. Bloom filter: a constant time and memory check to see whether a given element exists in a set.
Estimates vary as to how long it took to build the Taj Mahal. Some historians state that it took only 14 years to build it, from 1631-1645, but a more realistic figure is probably 22 years, being completed in 1653.
Construction of Taj Mahal began in 1632 AD, (1041 AH), on the south bank of the River Yamuna in Agra, and was substantially complete by 1648 AD (1058 AH). The design was conceived as both an earthly replica of the house of Mumtaz in paradise and an instrument of propaganda for the emperor.