algo | Collection of problems from algorithm contests | Learning library

 by   palcu C++ Version: Current License: No License

kandi X-RAY | algo Summary

kandi X-RAY | algo Summary

algo is a C++ library typically used in Tutorial, Learning, Example Codes applications. algo has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

This is my collection of algorithm problems from different contests and archives. The sources are mostly in C++ and some are in Python.
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            kandi-support Support

              algo has a low active ecosystem.
              It has 14 star(s) with 8 fork(s). There are 5 watchers for this library.
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              It had no major release in the last 6 months.
              algo has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of algo is current.

            kandi-Quality Quality

              algo has no bugs reported.

            kandi-Security Security

              algo has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              algo does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

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              algo releases are not available. You will need to build from source code and install.

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            algo Key Features

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            algo Examples and Code Snippets

            No Code Snippets are available at this moment for algo.

            Community Discussions

            QUESTION

            Multi-dimensional Array; JavaScript; Algorithum
            Asked 2021-Jun-15 at 19:02

            Details
            I'm working on an algo dealing with a multi-dimensional array. If there is a zero, then the elements of the same column, but following arrays will also equal zero. I want to be able to sum the items that are not zeroed out.

            ...

            ANSWER

            Answered 2021-Jun-15 at 17:18

            QUESTION

            Polygonization of disjoint segments
            Asked 2021-Jun-15 at 06:36

            The problem is the following: I got a png file : example.png

            • that I filter using chan vese of skimage.segmentation.chan_vese

              • It's return a png file in black and white.
            • i detect segments around my new png file with cv2.ximgproc.createFastLineDetector()

              • it's return a list a segment

            But the list of segments represent disjoint segments.

            I use two naive methods to polygonize this list of segment:

            -It's seems that cv2.ximgproc.createFastLineDetector() create a almost continuous list so I just join by creating new segments:

            ...

            ANSWER

            Answered 2021-Jun-15 at 06:36

            So I use another library to solve this problem: OpenCV-python

            We got have also the detection of segments( which are not disjoint) but with a hierarchy with the function findContours. The hierarchy is useful since the function detects different polygons. This implies no problems of connections we could have with the other method like explain in the post

            Source https://stackoverflow.com/questions/67932354

            QUESTION

            How can I draw a layout when a task is running in Kotlin
            Asked 2021-Jun-14 at 15:08

            I explain the situation, I made an algo that displays the shortest path through all the points, this algo takes a little time to run that's why I wanted to set up a progress bar to induce the user of the application has not frozen but is performing a calculation, To do this I simply created a layout with a progress bar but when I execute the code nothing is displayed (the layout) but the result of my algo is displayed, is there a command to display it?

            progress_bar.xml:

            ...

            ANSWER

            Answered 2021-Jun-14 at 15:08

            It seems like there are threading issues. The long-running task could be blocking the UI during its calculations.

            How about trying the exhaustive algorithm on the background and updating the UI (progressbar in this case) when the calculation is complete from the background?

            You can use the popular Kotlin-Coroutine to achieve this.

            You can copy-paste try it:

            Source https://stackoverflow.com/questions/67971232

            QUESTION

            Python: 'list' object is not callable
            Asked 2021-Jun-09 at 08:09

            have the following code to compare the time of bubblesort and quicksort:

            ...

            ANSWER

            Answered 2021-Jun-09 at 08:09

            Change your timer function to

            Source https://stackoverflow.com/questions/67899903

            QUESTION

            Passing DataTable to Table-Valued Parameter in stored procedure not working
            Asked 2021-Jun-07 at 09:04

            So, I need to pass a table-valued parameter (filled from selected options in CheckBoxLists) to a stored procedure in order to retrieve recipes that match some of the criteria inside my table-valued parameter, but when I try to do it, it doesn't return anything. I am working on ASP.Net and C#.

            SQL Server Stored Procedure

            ...

            ANSWER

            Answered 2021-Jun-06 at 04:55

            As rightly pointed out by @Alexander Petrov , you are declaring a table type with name dbo.filters

            Source https://stackoverflow.com/questions/67854561

            QUESTION

            Reduction of search space in binary search
            Asked 2021-Jun-06 at 13:29

            I am solving the classical binary search problem:

            ...

            ANSWER

            Answered 2021-Jun-06 at 13:29

            I am seeking an intuitive explanation for setting hi=mid (specifically with the while loop condition as lo and not lo<=hi). I think we should set it as hi=mid-1, since we know that mid cannot contain our answer (if it did, then we would have already returned).

            There are two main potential issues here:

            1. Correctness. Does the function terminate, returning the correct answer, for all inputs?

              • with hi=mid, yes. For this, we can observe that when the loop condition lo holds, mid is always strictly less than hi but not less than lo, therefore setting mid=hi reduces the search interval. We can also observe that when that alternative is exercised, the target value must be in the reduced interval if it is present at all. Since the search space is finite and is reduced at every iteration, the computation must eventually reach an interval size of 1 (and therefore terminate) if it does not find the target sooner.

              • with hi=mid-1, also yes. The argument is the same, but it is worth noting that it can be the case that mid == lo, which yields the possibility that hi would be set less than lo. That does not present a practical problem as the function is written, but it is a bit untidy.

            2. Efficiency. Could the function arrive at the correct result in fewer steps?

              Using hi=mid-1 does not make the function asymptotically faster. It is O(log n) either way. Moreover, on any given problem, the two alternatives will test different sequences of values, so either alternative might happen to complete in fewer cycles than the other when the target value is present. Intuition suggests that shrinking the search interval that little bit more would be a slight win on average, especially in the case where the target value is not present, but that gain is proportionally insignificant except for in the cycles where the interval is already pretty small.

            I am trying to intuitively understand how the search space reduces while developing the logic (before getting to coding) so that I can come up with a concrete algo that can work on all examples.

            Either alternative works, and there is no reason to expect a noticeable speed difference. It comes down, then, to style and personal sensibility. Myself, I prefer hi=mid in this case so as to avoid ever producing a situation where hi < lo. Others might prefer hi=mid-1 for symmetry.

            Side note: one cannot, on the other hand, change from lo=mid+1 to lo=mid. Because it is possible for mid=lo+(hi-lo)/2 to result in mid==lo, one needs the lo=mid+1 alternative to ensure that the interval shrinks on every cycle.

            Source https://stackoverflow.com/questions/67854714

            QUESTION

            R dplyr mutate with hash function (digest) requiring R object as input
            Asked 2021-Jun-05 at 18:22

            I want to convert my string ID column into numeric ID column.

            For this objective, I'm using the following 2 hash functions: digest() and digest2int().

            digest() from library(digest) requires R object as input.

            When calling digest() within the dplyr::mutate,instead of applying the digest() for each value from column Species, it only gives 1 unique value across all Species values.

            ...

            ANSWER

            Answered 2021-Jun-05 at 12:13

            digest is not vectorized, you need to apply it for each value separately which can be achieved with rowwise.

            Source https://stackoverflow.com/questions/67849434

            QUESTION

            Active tab issue on page load HTML
            Asked 2021-Jun-05 at 03:59

            i am trying my hand at front end development for the first time and am having a little glitch which is not behaving as i thought it would.

            The website is calculating ratings for sports teams using ELO derived algos.

            Problem 1 : On the EPL Game Results tab it should only have 'ternary algorithm' active on page load, and the tab should have a green underline. Currently nothing is underlined on initial load, and both tabs (ternary and MOV) appear to be active.

            Problem 2 : when you click MOV algorithm, and then refresh the page, I need it to just be the MOV algorithm active and underlined. Currently, MOV stays underlined but both MOV and Ternary become active.

            Here is the jsfiddle: https://jsfiddle.net/wa7gb43j/

            ...

            ANSWER

            Answered 2021-Jun-05 at 03:59

            First of all, you have too much inline code going on, this is a bad practice. Avoid using inline style when possible. So instead of changing style.display, add/remove a class or an attribute that would do the style changes within CSS, this way you can eliminate the need of loop through elements to change all their styles.

            Just a quick and dirty example of what I mean:

            Source https://stackoverflow.com/questions/67841382

            QUESTION

            Access Crypto.Com API with R (translate from Python)
            Asked 2021-Jun-02 at 03:00

            I promise I tried my best but I just couldn't get this to work.

            Here's the exact python code from the API Website: https://exchange-docs.crypto.com/spot/index.html?python#digital-signature

            ...

            ANSWER

            Answered 2021-Jun-02 at 03:00

            Ok I figured it out and for the good of humanity I think I'll post my solution! Complete with sorting params.

            I was using a GET instead of a POST and I totally forgot to reinject the hash into the "req" object after it was calculated (and other minor things). Anyway, several hours of tearing out my hair, so you don't have to, you get this:

            Source https://stackoverflow.com/questions/67782611

            QUESTION

            Regex on htaccess file gives INTERNAL REDIRECT error
            Asked 2021-Jun-01 at 06:33

            I'm trying to create a redirect rule that matches the following urls:

            ...

            ANSWER

            Answered 2021-Jun-01 at 06:33

            You may try this rewrite rule:

            Source https://stackoverflow.com/questions/67773685

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

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            Install algo

            You can download it from GitHub.

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