Recent questions tagged algorithm

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algorithm - Pseudocode to find cycles in a graph using breadth first search

Please give me pseudocode for finding cycles using BFS. I know other questions of this type exist but NONE give the code. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - How to count simple paths constrained by ±1 or ±2 steps?

I have found this interesting dynamic-programming problem and want to know the approach . We are given an array 'a' of ... [1,10] 3)[1,1000] See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Aranging integers in a specific order

Given a set of distinct unsorted integers s1, s2, .., sn how do you arrange integers such that s1 < s2 ... explain me why this algorithm works. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - R kmeans initialization

In the R programming environment, I am currently using the standard implementation of the kmeans algorithm ( ... initial centroid coordinates? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Automatic regex builder

I have N strings. Also, there are K regular expressions, unknown to me. Each string is either matching one ... work) are greatly appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - How do I get a 3D cross section of a 4D mesh?

I have a polychoron represented as a four-dimensional mesh, stored with the face-vertex method. All the faces are ... it's one dimension short. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Numerical stability of point-in-triangle test with barycentric coordinates

While looking at various methods for point-in-triangle testing (2D case), I found that the method which ... is particularly near the border? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Frequency of each element of an array considering all contiguos subarrays

Consider an array A = [5,1,7,2,3] All contiguos subarrays = { [5], [1], [7], [2], [3], [5 ... I can do so?Any hint,approach will be appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Generating a Smooth Random Trend (Random Walk) in JavaScript

I am looking for a JavaScript implementation of a random walk/random trend algorithm. I need something that will ... generate data like this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Approximate a curve with a limited number of line segments and arcs of circles

Is there any algorithm that would allow to approximate a path on the x-y plane (i.e. an ordered ... and interact with neigboring segments. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Scala for comprehension performance

Why is for ( a <- 1 to 1000; b <- 1 to 1000 - a; c <- 1 to 1000 - a - b; if (a * a + b * b == c * c ... ) println((a, b, c, a * b * c)) } 9 ms See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Why we can not apply counting sort to general arrays?

Counting sort is known with linear time if we know that all elements in the array are upper bounded by a given ... then to apply counting sort? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Select n records at random from a set of N

I need to select n records at random from a set of N (where 0 < n < N). A possible algorithm is: ... have a final word about the matter? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - How to fit the 2D scatter data with a line with C++

I used to work with MATLAB, and for the question I raised I can use p = polyfit(x,y,1) to estimate ... accuracy of polyfit function in MATLAB. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - What's the good of using 3 states for a vertex in DFS?

In the explanation of depth-first search (DFS) in Algorithms in a Nutshell (2nd edition), the author used 3 states ... ? What's it used for? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Mapping Hilbert values to 3D points

I have a set of Hilbert values (length from the start of the Hilbert curve to the given point). What is ... ? Language does not matter much. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Generic Binary Search in C#

Below is my Generic Binary Search. It works okay with the integers type array (it finds all the elements in it). ... the Collection"); } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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834 views

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algorithm - Interleave three equally sized partitions in an array inplace in O(n) time

Given an array of size 3n of the form [x1, x2, x3... xn, y1, y2, y3... yn, z1, z2, z3... zn] Convert it to ... me to O(n log n) but not O(n). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Embedded youtube video with "autoplay=1". Does it count towards views?

I can cause an embed youtube video to begin playing automatically using "autoplay=1" When a user views the embedded ... not seem to be relevant. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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947 views

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algorithm - Find the smallest regular number that is not less than N

Regular numbers are numbers that evenly divide powers of 60. As an example, 602 = 3600 = 48 75, so both ... an array of all possible values. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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949 views

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algorithm - Clustering with a distance matrix

I have a (symmetric) matrix M that represents the distance between each pair of nodes. For example, A B C D E F G H ... , K, L). Thanks a lot :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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815 views

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algorithm - Choose random array element satisfying certain property

Suppose I have a list, called elements, each of which does or does not satisfy some boolean property p. I want to choose ... with 0 <= k < n.) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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981 views

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algorithm - Calculate Nth root with integer arithmetic

There are a couple of ways to find integer square roots using only integer arithmetic. For example this one. ... and found them quite similar. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - Euclidean greatest common divisor for more than two numbers

Can someone give an example for finding greatest common divisor algorithm for more than two numbers? I believe ... language doesn't matter. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - How exactly does a XOR Linked list work?

The following link explains it. The implementation is said to work by storing the XOR of the previous and ... previous and next pointers? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - most significant v.s. least significant radix sort

If I just need to sort strings composed by ASCII characters, wondering what are the differences between using most ... . thanks in advance, Lin See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - How to get the second highest number in an array in Visual C#?

I have an array of ints. I want to get the second highest number in that array. Is there an easy way to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - All Array Combination in JavaScript

Need all possible combinations of an array including the reverse of a combination too. Eg: var b = ['a1','b1',' ... '', chars); return result; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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