Talk:Dijkstra's algorithm: Difference between revisions

: Some possibly relavent points: 1) The Go code spent most of its time matching strings to find overlaps, that's O(n^2) with n = 20k ish; 2) the edge count is relatively low, and the code stops after reaching the target node (instead of finding the distances to all nodes). It is a valid use of the algorithm, but since the edge count isn't high and there are some peculiarities in the way distances are computed (nodes of long words tend to have longer distances to everything else, and low edge count makes the graph more tree like which sort of forces the search to follow a narrow path), the program didn't have to search too much to finish. Of 20k ish nodes, it only need to navigate through 2820. 3) minor: the tree doesn't seem to be fully connected. There may be a small number of nodes not reachable from the starting point.

: The Go code is fine for what it's doing, but it's best not to draw conclusions about the performance based only on the current test case. --[[User:Ledrug|Ledrug]] 06:55, 10 December 2011 (UTC)