Recent questions tagged algorithm

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this is the code ::::::: import dsa.DiGraph; import dsa.SeparateChainingHashST; import dsa.Set; import stdlib.In; import stdlib.StdOut; public class WordNet { //... ... %s) = %s\n", word1, word2, wordnet.distance(word1, word2)); } }...

asked May 12, 2022 in Others[杂七杂八] by cathrineval (180 points)

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Dynamic Programming in Genetic algorithm for solving Traveling Salesman Problem

pleas help me !. I need Dynamic programming in genetic algorithm for solving TSP. Initially I have taken two parents and substitute in one formula of ... offspring (crossover) for obtaining the best solution. I need implementaion part help...

asked Nov 8, 2021 in Topic[话题] by satya (120 points)

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algorithm - Counting ways to climb n steps with 1, 2, or 3 steps taken

In a book I encountered following question: Given N step stair, in how many number of ways can you climb if you use either 1, 2 or 3 steps at a time? Following is the ... cases i.e. (1,1,1), (1,2), (3). 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 - understanding the minesweeper programming p.roblem

I am trying to understand the minesweeper problem: Problem statement: Have you ever played Minesweeper? This cute little game comes with a certain operating ... problems , they are game projects. ) 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 - Shortest path between two nodes in an infinite, complete binary tree?

Suppose we have an infinite, complete binary tree where the nodes are numbered 1, 2, 3, ... by their position in a layer-by-layer traversal ... we efficiently find the shortest path between them? Thanks! 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 - Unexpected result of my DFS tree (C++)

I have solved this problem!!! I found that if i have to use vector<Node*> children;. But I am not very sure the reason, can someone tell me why? ... PREV; PREV->children.push_back(*cur); PREV = cur; } 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 - Rough estimate of running time from Big O

If the time complexity of my program is,say O(n^2),How do I express running time in terms of seconds for a large value of n,10^6 ? I need ... ....It's about estimation of running time from Time complexity 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 - Split a random value into four that sum up to it

I have one value like 24, and I have four textboxes. How can I dynamically generate four values that add up to 24? All the values must be integers and can't be ... 4. (But 5, 6, 6, 7 would be okay.) 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 - Asymptotic analysis

I'm having trouble understanding how to make this into a formula. for (int i = 1; i <= N; i++) { for (int j = 1; j <= N; j += i) { ... ) How would be best to try and think this as a function of 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 - Why is multi-paxos called multi-paxos?

Why multi-paxos is called multi-paxos? I can't see how it is "multi". 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 - Meaning of average complexity when using Big-O notation

While answering to this question a debate began in comments about complexity of QuickSort. What I remember from my university time is that QuickSort is O( ... can someone state it more rigorously than I ? See Question&Answers more detail:os...

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

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491 views

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algorithm - Find all simple path from node A to node B in direct weighted graph with the sum of weighs less a certain value?

I have a directed weighted graph G=(V,E), which may have loops. I am trying to determine the best time efficient algorithm to accomplish task: to ... and maybe there are better algorithms to solve 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 - MySQL Mixing Damerau–Levenshtein Fuzzy with Like Wildcard

I recently implemented the UDFs of the Damerau-Levenshtein algorithms into MySQL, and was wondering if there is a way to combine the fuzzy matching of ... of it appearing anyway within the Text field. See Question&Answers more detail:os...

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

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767 views

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algorithm - c# using bitwise XOR for swapping

void swap(ref int x, ref int y) { x = x ^ y; y = y ^ x; x = x ^ y; } im learning about bitwise XOR. how is this swapping occurring? it's ... of X and Y, but i dont understand AT ALL what is going on? 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 - Java: get all concatenations of List<List<String>>

I have a List<List<String>> I need to get a List of all possible concatenation on the first dimension [ [1,2 ], [1] , [3,4] ] ... ; indexList.add(l); System.out.println( constructIndexes(indexList)); See Question&Answers more detail:os...

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

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547 views

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algorithm - Outline (circumference) polygon extraction from geometry constructed from equal squares

I'm sure there must exist a way to do the following but I don't know what it's called so I cannot google it. I need an algorithm to go from A to B ... ) -> OUT Polygon { //The algorithm I need goes here } 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 construct np-reduction for this matching problem?

I have a matching problem, which I think is np-hard: We need to arrange a dinner for a group of n people, some of the people are friends with ... but i would be very gratefull for any ideas for solutions See Question&Answers more detail:os...

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

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522 views

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algorithm - How do you check if one array is a subsequence of another?

I'm looking to explore different algorithms, both recursive and dynamic programming, that checks if one arrayA is a subsequence of arrayB. For ... algorithms to compute the longest increasing subsequence. See Question&Answers more detail:os...

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

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667 views

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algorithm - maximum value of xor operation

I came up with this question. There is an encryption algorithm which uses bitwise XOR operations extensively. This encryption algorithm uses a sequence of non- ... . Maximum time limit in java is 5sec. See Question&Answers more detail:os...

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

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660 views

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algorithm - Flood filling for number plate recognition

I have a number plate which is a binary image. I performed dilation to the image to thicken the edges then "flood filling", lastly erosion for thinning: ... figure();imshow(ab,[]); title('floodFilling'); See Question&Answers more detail:os...

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

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685 views

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algorithm - Implement "For loop" on prolog

How to Implement using recursion and cut-off cycle of the counter (like for i: = 1 downto N do <operator>) ? 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 - Generate all subset sums within a range faster than O((k+N) * 2^(N/2))?

Is there a way to generate all of the subset sums s1, s2, ..., sk that fall in a range [A,B] faster than O((k+N)*2N/2), where ... order of millions, so I haven't considered the dynamic programming route. See Question&Answers more detail:os...

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

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923 views

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algorithm - Comparing two lists of coordinates in python and using coordinate values to assign values

I have two sets of data taken from two separate import files which are both being imported into python and have currently been placed in lists as ... solution, any help would be really appreciated. Cheers See Question&Answers more detail:os...

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

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555 views

1 answer

algorithm - Most common element in an array / Finding the relative majority, deterministically in O(n) time and O(1) space?

So for example, the answer for the array: 1, 11, 3, 95, 23, 8, 1 would be 1, since all the other elements only occur once while 1 occurs ... showing why it's impossible? Including a source would be nice. See Question&Answers more detail:os...

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

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646 views

1 answer

algorithm - Is this how rotation about a point is done?

Let's say I have a polygon with points: (0,0) (100,0) (100,100) (0,100) Lets also let it's center be (50,50). To rotate it would I ... (theta)*y Then subtract 50 from each component of each point? Thanks See Question&Answers more detail:os...

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

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839 views

1 answer

algorithm - Encrypt string in ABAP and decrypt in JavaScript

I have an ABAP class which encodes a string as qr code and sends this code as email. At a later point, the code will be decoded by a SAPUI5 app ... code by himself. Thank you for your hints and ideas! See Question&Answers more detail:os...

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

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658 views

1 answer

algorithm - Counting existing permutations in R

I have a large dataset with columns IDNum, Var1, Var2, Var3, Var4, Var5, Var6. The variables are boolean with value either 0 or 1. Each row could be one ... . Is there an efficient way to write this in R? See Question&Answers more detail:os...

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

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12.2k views

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algorithm - Anagram of String 2 is Substring of String 1

How to find that any anagram of String 1 is sub string of String 2? Eg :- String 1 =rove String 2=stackoverflow So it will return true as anagram of "rove" is "over" which is sub-string of String 2 See Question&Answers more detail:os...

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

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