How does a 'diff' algorithm work, e.g. in VCDIFF and DiffMerge?
An O(ND) Difference Algorithm and its Variations (1986, Eugene W. Myers) is a fantastic paper and you may want to start there. It includes pseudo-code and a nice visualization of the graph …
The best shortest path algorithm - Stack Overflow
The algorithm has the same worst case complexity as Djikstra's, but in the average case the expected runtime is linear in the size of the graph, which is much faster than the pure Dijkstra. …
algorithm - Finding all possible combinations of numbers to reach …
Jan 8, 2011 · Here is a Java version which is well suited for small N and very large target sum, when complexity O(t*N) (the dynamic solution) is greater than the exponential algorithm. My …
algorithm - Calculate distance between two latitude-longitude …
Aug 26, 2008 · Some of the answers do refer to Vincenty's formula for ellipsoids, but that algorithm was designed for use on 1960s' era desk calculators and it has stability & accuracy …
algorithm - What is the best way to get the minimum or maximum …
Jan 8, 2009 · Then there is an algorithm that finds the min and max in 3n/2 number of comparisons. What one needs to do is process the elements of the array in pairs. The larger of …
Newest 'algorithm' Questions - Stack Overflow
In Dijkstra’s algorithm, how do you prove that at any moment: distance[v] ≥ length(P) for shortest s → v path P where all vertices (except possibly v) are already processed (i.e., not in the priority ...
Big O, how do you calculate/approximate it? - Stack Overflow
Dec 19, 2019 · Big-O does not measure efficiency; it measures how well an algorithm scales with size (it could apply to other things than size too but that's what we likely are interested here) - …
algorithm - Difference and advantages between dijkstra & A star
Oct 23, 2012 · If I need the algorithm to run in milliseconds, when does A* become the most prominent choice. Not quite, it depends on a lot of things. If you have a decent heuristic …
algorithm - How does one make a Zip bomb? - Stack Overflow
Sep 22, 2009 · The construction uses only the most common compression algorithm, DEFLATE, and is compatible with most zip parsers." "Compression bombs that use the zip format must …
How can I determine whether a 2D Point is within a Polygon?
Oct 20, 2008 · Here's an algorithm faster than everybody else's algorithm for most cases. It's new and elegant. We spend O(n * log(n)) time building a table that will allow us to test point-in …