Given a connected, undirected graph, a spanning tree of that graph is a subgraph that is a tree and connects all the vertices together. A single graph can have many different spanning trees. We can also assign a weight to each edge, which is a number representing how unfavorable it is, and use this to assign a weight to a spanning tree by computing the sum of the weights of the edges in that spanning tree.
The definition of a tree accepted by science and the forestry industry
is “A woody plant (arboreal perennial) usually with a single columnar
stem capable of reaching six metres in height”. Less than six metres
(21ft) of potential height is regarded as a shrub.This definition is not absolute; gardeners
contest the height threshold, some
preferring five metres (17ft) and others
choosing a threshold of three metres
(13ft). It is likely that bonsai enthusiasts
would entirely dismiss any figures
Bài giảng Phân tích và thiết kế thuật giải - Bài 4 giới thiệu về thuật giải tham lam. Các nội dung chính trong chương này gồm có: Các thuật giải tham lam, một số thuật giải Greedy, 0-1 vs. Fractional Knapsack, Greedy Fractional Knapsack Algorithm,... Mời các bạn cùng tham khảo.