This tag is for questions about search algorithms, tools, and technologies.
5
votes
1answer
60 views
Text search in Python
Whilst self-studying algorithms, I came across the Karp-Rabin rolling hash search algorithm here. I decided to have a go at implementing it in Python:
For ease of reading; the data-structure ...
5
votes
1answer
295 views
Find all strings in list which have keywords in it from another list
I a list of strings A and a list of keywords B. Now I want to return all strings from list A which have all keywords from B in it as a new list.
...
2
votes
2answers
90 views
Repository searching code duplication
A followup question to this: IQueryable Extensions working on expression for collection property
I am working on a project for a family member which involves the use of a database and a repository, ...
-4
votes
0answers
36 views
File search program in python too slow
The file search program I have created works by recursively searching each folder and sub-folder, and then printing the match for the file when it finds one.
...
0
votes
1answer
42 views
Sentinel based find with conditional fallback to std::find
I've got bored, so I decided to write a code using ancient knowledge of sentinels.
Sentinel based find
Basically what we do is put value that is needed to find at the end, and then write an endless ...
3
votes
0answers
69 views
Solving Sudokus in Scheme Using Simulated Annealing
This program's purpose is to solve sudokus using simulated annealing. It first fills all the 3x3 blocks in the sudoku such that every block is filled with 1-9. It also builds a list of pairs of ...
3
votes
1answer
87 views
Detect if string contains more than 1 period
This function returns true if the string contains zero or one periods, and returns false if the string contains more than one ...
1
vote
1answer
69 views
Check if strings are substrings of another string in Python
My problem starts with a list A (length around n = 100) of big strings (around 10000 characters each). I also have another q = 10000 strings of length 100. I want to check if each string is a ...
3
votes
2answers
82 views
PHP surround search text with words
The requirement: search a string in a text-string (from DB) and show additional info around when presenting the result.
Examples:
text string = "The Quick Brown Fox Jumps Over the Lazy Dog"
search =...
3
votes
3answers
189 views
Parameterized search query in C#
In the UI I have a single search text box into which users can type a query. The query will split the string and compare each word to each configured column in the database and return the matches.
...
7
votes
1answer
162 views
Search in a JSON structure after a key
This code is supposed to search for a specific key in a object or an array or a mix between both. Is there anything I can improve?
...
3
votes
1answer
62 views
jQuery Search Suggestion Generator
I'm currently using a PHP shopping cart, and finally decided to implement a search suggestion feature.
There are some already available solutions out there, but I wanted to gain control over how mine ...
0
votes
0answers
20 views
JQuery Search Suggestion Generator
I'm currently using a PHP shopping cart, and finally decided to implement a search suggestion feature.
There are some already available solutions out there, but I wanted to gain control over how mine ...
2
votes
2answers
132 views
Class name search algorithm
Here is a test task from a company, where I'd like to work eventually. I solved all they wanted to me to do, however failed to get an interview. I do not know what is wrong with my solution, because ...
1
vote
2answers
172 views
6
votes
2answers
61 views
Search for longest substring in alphabetical order in a given string
I would like some help with a review of a program that I wrote to identify the longest continuous sub-string that is in alphabetical order within a string. This is a JavaScript adaptation of an ...
0
votes
0answers
30 views
0
votes
0answers
52 views
Merging results of product searches by category, price, and manufacturer
Following is code which takes three arguments as
String
Map
String
now I already have some predefined methods which return the requirement of both String as List ...
2
votes
1answer
80 views
File search program not efficient enough
I have created a program to search for a file in the computer. But I feel it can be improved. Can anyone help me with this?
filesearch.py
...
2
votes
1answer
61 views
Filesystem search class in C#
Anyone can tell how to make this code faster?
This search takes too much time... 700 000 files for 15 minutes...
I will be grateful for each micro optimization!
Search Class:
...
6
votes
2answers
77 views
Binary search a 2D array for multiple matching criteria fields
Here is what I came up with for a binary search of an array. It allows for searching one or many columns to match. It assumes that array being searched is sorted with the same sort priorities as the ...
1
vote
2answers
57 views
Searching local drive for multiple files
Well, I'm writing a piece of code that will take a list of file names and should search a local drive for each file, determine if it's there or not, and return an array of all the paths found.
Right ...
4
votes
0answers
44 views
Unstructured quantum search algorithm for unknown solutions
This code was tested on IBM's 5-Qubit processor as an implementation of Grover's search algorithm, but for an unknown number of solutions. This code is based on Arthur Pittenger's book, "An ...
10
votes
3answers
493 views
Read file with over 300k words and filter through appropriate filter to return list of matching words
As a puzzle we were asked to bring out the possibilities in breaking a 4 letter wordlock combination. It was to be a four letter word from the English dictionary. There were 10 possible characters in ...
3
votes
2answers
102 views
Product search script Object Oriented PHP
I have made a search script in OO PHP that searches for products based on the inserted criteria, selects them and checks whether a sale is on, if it's in stock and other features.
I am new to OOP so ...
5
votes
1answer
64 views
Determining whether a date is within a range
I am taking a user input which consists of a from date and a to date. Those dates are compared against 4 cells in a row - a post date, pause date, resume date, and a close date. My goal with this code ...
2
votes
0answers
72 views
Query for searching for the best transportation
I made a website where is possible to search for the best transportation from a place to another. For instance, if I need to go from Berlin to Bremen, the website will search in its internal database ...
4
votes
1answer
83 views
Prints Books from a HashMap that are complete or incomplete
This code is meant to display book titles that are incomplete. I have a HashMap with the book title and a number that represents the amount of the book that has ...
1
vote
2answers
97 views
Excerpt from a brute force Rubik's Cube algorithm
I have a program that brute force searches for a combination of inputted array elements by the user and when the program is searching all the for loops are nested for the brute search then I have this ...
1
vote
2answers
84 views
Python Search file for string and read into list
This function of my program is searching a file that is formatted as first_name last_name rate hours:
John Smith 25 80
Mary Johnson 15.5 60.0
...
With one space ...
6
votes
1answer
64 views
Checking if a line in a file contains user.Handle and '-r'+any single digit number
The title pretty much explains everything. I'm try to check if a line in a file contains user.Handle and '-r'+any single digit ...
3
votes
1answer
77 views
Filtering a list for certain strings
I want to create a function that filters a list with the following criteria:
Strings containing numbers should be removed
Strings containing only one word and first letter of the word is not ...
5
votes
2answers
53 views
Search files from large directory and sub-directories
Essentially I have a large directory with many sub-folders and different formats of files. It reads through XML, JAVA, .txt, etc, in search of a selected String inputted by the user. The results ...
1
vote
5answers
101 views
Ruby array search, returning either a result with a good score or the last result
I have an array of hashes, each of which has two attributes: "title" and "Zscore". I want to return either the result of ...
-1
votes
1answer
97 views
Searching into a contact list
I am performing search in a contact list using linear search with complexity \$O(n)\$. Please suggest me how to improve search strategy in my code.
...
1
vote
1answer
35 views
Object key diff
I've been tasked with finding property differences in massive JSON structures and return them in a particular fashion ([key_1.key_2, key_1, etc]).
Here's my code, which is focused on readability so ...
5
votes
1answer
81 views
Sort a strings collection by a search term
I'm trying to implement a search bar in which the user sends a search term and the search bar displays the results.
I have a naive solution which separates the original list into three sublists:
a ...
5
votes
3answers
123 views
Composing and executing a customer search
I was wondering if someone could help me refactor this code. Although I know this looks bad, it works. Now I would like to refactor it so I would respect the open/closed principle in SOLID. Let's say ...
5
votes
3answers
182 views
Interview coding test: Searcher
I did a task for an interview and the solution was not accepted. The task was to implement the class search function by name. The number of classes in the input data from 0 to 100000. Class names are ...
3
votes
3answers
174 views
Search in a big dictionary Python
I have a big Python dictionary with more then 150,000 keys every key has list value. This dictionary contains infinitive words as key and all grammatical forms of these words as values:
...
4
votes
0answers
152 views
Shortest path navigation across a grid using Best First Search
The code below is an implementation of the Best First Search algorithm for navigation of the shortest path across a 2D NxN matrix. As a heuristic for the search I use the standard distance formula. ...
10
votes
1answer
154 views
Fuzzy grep for fuzzy bears in pure Python
I am aware of the Python modules galore to do this, but this was partially a learning experience and partially all the functionality I need and no more.
I'm writing a simple interpreter for a Forth-...
3
votes
2answers
106 views
Search algorithms in julia
I've been trying to implement the basic search algorithms: Sequential search for ordered and unordered arrays and the binary search algorithms, as part of a package.
So, this is the implementation:
<...
8
votes
1answer
410 views
Fuzzy / approximate text matching program in Python
I'm trying to build a program that will find approximate text matches between two texts. Basically, I'd like to find a way of identifying quotations, so that when an author quotes, say, the King James ...
3
votes
2answers
125 views
Most efficient dict filter on key tuple?
I have a dict wherein a value needs to be retrievable by any one of several keys. It seemed that making multiple dictionaries or multiple entries in a single ...
5
votes
2answers
270 views
Exponential search
I recently discovered the exponential search algorithm which can be used to find whether a value exists in an ordered range. An exponential search checks whether a value is smaller than the \$2^n\$th ...
5
votes
1answer
92 views
Implementing a Property Searcher
I want to search some or all public properties of a class and for this requirement I have implemented a Property Searcher.
The Input for a ...
6
votes
1answer
71 views
TrieSet with Wildcard Search
What I'm ultimately trying to accomplish is a tool in which I pour some documents. Then I mark #x documents as desired and #y documents as undesired.
My tool now is to analyse and compare the ...
0
votes
1answer
138 views
Umbraco Examine Search for Full Site
I have a macroscript which reads a query string for search term parameters, and then does a multiple word GroupedOr search through UmbracoExamine / Lucene.NET. Because this is a full site search, I ...
8
votes
2answers
280 views
Calculating the fastest strategy in OGame
For a game I am playing, OGame, I am trying to calculate the fastest strategy to reach a certain state in the game, relevant parts of the game for this question are:
You can build different types of ...
