algorithm - Finding all possible combinations of numbers to reach a ...
Jan 8, 2011 · How would you go about testing all possible combinations of additions from a given set N of numbers so they add up to a given final number? A brief example: Set of numbers to add: N = …
How can I find the time complexity of an algorithm?
1. Introduction In computer science, the time complexity of an algorithm quantifies the amount of time taken by an algorithm to run as a function of the length of the string representing the input. 2. Big O …
algorithm - What does O (log n) mean exactly? - Stack Overflow
Feb 22, 2010 · A common algorithm with O (log n) time complexity is Binary Search whose recursive relation is T (n/2) + O (1) i.e. at every subsequent level of the tree you divide problem into half and do …
What is the fastest integer factorization algorithm?
The algorithm picks on a number A along the curve, then looks up the safe distance and jumps to the next hashtable, or at least the algorithm does those factor checks until the next hashtable becomes …
Algorithm to return all combinations of k elements from n
Sep 24, 2008 · 60 The following recursive algorithm picks all of the k-element combinations from an ordered set: choose the first element i of your combination combine i with each of the combinations …
Why doesn't Dijkstra's algorithm work for negative weight edges?
Oct 31, 2012 · Can somebody tell me why Dijkstra's algorithm for single source shortest path assumes that the edges must be non-negative. I am talking about only edges not the negative weight cycles.
algorithm - What is a plain English explanation of "Big O" notation ...
Jan 28, 2009 · Similarly, an algorithm that only has to do one step which takes a constant amount of time is also considered to be an O (1) algorithm, but also to be an O (n) and an O (n^2) algorithm. …
algorithm - Peak signal detection in realtime timeseries data - Stack ...
Robust peak detection algorithm (using z-scores) I came up with an algorithm that works very well for these types of datasets. It is based on the principle of dispersion: if a new datapoint is a given x …
Algorithm to generate all possible permutations of a list?
Apr 26, 2010 · Say I have a list of n elements, I know there are n! possible ways to order these elements. What is an algorithm to generate all possible orderings of this list? Example, I have list [a, …
Negative weights using Dijkstra's Algorithm - Stack Overflow
Variants of Dijkstra's Algorithm The key is there are 3 kinds of implementation of Dijkstra's algorithm, but all the answers under this question ignore the differences among these variants. Using a nested for …