Unanswered Questions
201 questions with no upvoted or accepted answers
6
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answers
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Chapter 8 Challenge: Add employee names to a department
The boring but exciting challenge:
Using a HashMap and HashSet, create a text interface to allow a user to add employee names ...
- 85k
6
votes
0
answers
107
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4×4 cofactor in SSE
The cofactor of a 4×4 matrix can be used to convert a "regular geometry" matrix into the matrix that transforms the normals. It's an alternative to the common inverse-transpose pattern. In this post I ...
- 11.3k
6
votes
0
answers
453
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Implementing recursive filters with Haskell/Repa
I recently learned Haskell, and I am trying to apply it to the code I use in order to get a feeling for the language.
I really like the Repa library since I manipulate a lot of multi-dimensional data....
- 35k
5
votes
0
answers
407
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Creation of matrix with specific attempts at the end
What I want to do is build a Slay-the-Spire-like Map. As you can see in the following image, the map is splitted in ISteps and ...
- 392
5
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513
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Cache conscious SIMD matrix multiply of unsigned integers
The goal of the code review by order of importance (i.e. What I hope to hear from you):
I've verified correctness using a straightforward matrix multiply function though I am open to those who want to ...
- 151
5
votes
0
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173
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Kernel density regression in Julia
Here is a naive implementation of a kernel density regression algorithm in Julia.
The code works, but there is quite a bit of room for improvement though. First, there is not an optimal bandwidth ...
- 145k
5
votes
1
answer
4k
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Largest rectangle areas after drawing boundaries
I was asked the following question while trying to get a Hackerrank certificate. I couldn't solve on time but I now completed the solution. Can you please check if my solution seems good? Suggestions ...
- 85k
4
votes
0
answers
61
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16x16 integer matrix transpose using SSE2 intrinsics in C
I was inspired by this and this to make a C function that would take an array of 16 __m128i, treat it as a matrix of 16x16 ...
- 171
4
votes
0
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165
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Finding the number of possible paths in a cave system (Python)
I've finally come up with working solution for day 12 of AdventOfCode, where you have to find the number of possible paths in a cave system following a given set of rules (described below). My ...
4
votes
0
answers
216
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GeekTrust: Traffic problem - functional programming
First attempt to write functional programming, been following OO paradigm all through my programming journey
Please review the code and let me know if any comments and violations of functional ...
- 375
4
votes
0
answers
145
views
LeetCode 1632: Rank Transform of a Matrix in Rust
This is a problem-solving code for LeetCode 1632.
Given an \$m \times n\$ matrix, return a new matrix answer where
...
4
votes
0
answers
287
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Creating Multiple Carousels by storing them in an Array with JavaScript
I created a code where I can add multiple carousels to a page. I did this by storing the carousel in an array and accessing it by clicking on the previous/next arrows.
I was trying to prevent any ...
- 41
4
votes
0
answers
79
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Extracting cycles from directed graph with max degree 1 and then performing set cover on cycles
I'm trying to solve P1243E in an efficient manner. The problem in simple words is:
Given \$k\$ boxes, \$i\$-th box with \$n_i\$ numbers. All numbers are distinct. We need to select one number from ...
- 10.7k
4
votes
0
answers
858
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Kadane's algorithms to leetcode "121 Best Time to Buy and Sell Stock"
I employed the conventional Kadane's algorithms to solve a maximum subarray problem in leetcode Best Time to Buy and Sell Stock - LeetCode
Description
Best Time to Buy and Sell Stock
...
- 69k
4
votes
0
answers
498
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Two solutions to leetcode 127.wordLadder
I am working on Word Ladder - LeetCode
Given two words (beginWord and endWord), and a dictionary's word list, find the length of shortest transformation sequence from beginWord to endWord, such that:...
- 145k