Questions tagged [search]
This tag is for questions about search algorithms, tools, and technologies.
379
questions
5
votes
1
answer
383
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.
...
- 272
2
votes
2
answers
129
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, ...
- 203
0
votes
1
answer
80
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 ...
- 9,259
4
votes
0
answers
294
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 ...
- 175
3
votes
1
answer
2k
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 ...
- 3,770
1
vote
1
answer
561
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 ...
- 11
5
votes
3
answers
2k
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 =...
- 51
2
votes
3
answers
6k
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.
...
- 189
7
votes
1
answer
8k
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?
...
- 73
4
votes
1
answer
257
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
2
answers
565
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 ...
- 23
1
vote
2
answers
985
views
6
votes
2
answers
753
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 ...
- 175
2
votes
1
answer
105
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
...
- 185
2
votes
1
answer
239
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
2
answers
2k
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 ...
- 63
1
vote
2
answers
128
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 ...
6
votes
1
answer
161
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
3
answers
593
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 ...
- 203
3
votes
2
answers
3k
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 ...
- 31
5
votes
1
answer
113
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 ...
- 191
2
votes
0
answers
90
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 ...
- 21
4
votes
1
answer
206
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 ...
- 41
1
vote
2
answers
239
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
2
answers
3k
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 ...
- 322
6
votes
1
answer
79
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 ...
- 181
6
votes
1
answer
10k
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 ...
- 171
5
votes
2
answers
972
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
5
answers
168
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 ...
- 119
-1
votes
1
answer
2k
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.
...
- 99
4
votes
2
answers
1k
views
Object key diff
I've been tasked with finding property differences in massive JSON structures and returning them in a particular fashion (i.e. [key_1.key_2, key_1, etc.]).
Here's ...
- 143
5
votes
1
answer
903
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 ...
- 151
5
votes
3
answers
136
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 ...
- 51
6
votes
3
answers
314
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 ...
- 83
5
votes
3
answers
11k
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:
...
- 235
5
votes
1
answer
2k
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. ...
- 51
10
votes
1
answer
367
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-...
- 977
3
votes
2
answers
1k
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:
<...
- 295
8
votes
1
answer
2k
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 ...
- 173
2
votes
2
answers
11k
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 ...
- 616
9
votes
2
answers
1k
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 ...
- 19.9k
6
votes
1
answer
250
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 ...
- 897
7
votes
1
answer
222
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 ...
- 71
0
votes
1
answer
651
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 ...
- 193
9
votes
2
answers
3k
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 ...
- 10.6k
5
votes
2
answers
7k
views
Search word in multiple files
I am writing a brute-force method to search for a word. Please review my code and tell me how I can improve it.
...
- 151
2
votes
2
answers
1k
views
Counting the occurrences of a string in each file
I am trying to find a phrase or a string in file and count the number of occurrences of that string:
...
- 31
10
votes
1
answer
478
views
Bash command helper in C
Previously, I had written this program in C++ and asked about it here on Code Review. After spending some time with C++, I desired to become more familiar with its namesake. This is my first C program....
- 1,350
-3
votes
1
answer
3k
views
Mapping phone numbers to names [closed]
Problem description:
You are given a phone book that consists of your friend's names and
their phone number. After that you will be given your friend's name
as query. For each query, print the ...
4
votes
3
answers
9k
views
Replacing multiple search strings simultaneously
A utility method StringUtils.replace to replace multiple search strings simultaneously.
I'm looking for a review of any and all aspects, but especially:
Is there's ...
- 110k