假设具有以下R代码:
# create an example graph
library(igraph)
g <- graph.tree(n = 10, children = 2)
# add edge weights
E(g)$weight <- sample(1:10, length(E(g)), replace = TRUE)
# find the shortest path and its cost
shortest_path <- shortest_paths(g, from = 1, to = 10, output = "both")$epath[[1]]
cost <- sum(get.edge.attribute(g, "weight", index = shortest_path))
# print the results
cat(paste("Shortest path:", paste(shortest_path, collapse = " -> "), "\n"))
cat(paste("Cost:", cost, "\n"))
如何找到1到10之间的最长路径?
1条答案
按热度按时间mlmc2os51#
我们可以使用
get.all.shortest.paths()
函数来最终选择具有最大长度的路径: