Questions tagged [programming-challenge]
Use this tag when the code is a solution to a programming challenge. Always include a sufficient description of the problem to be solved - while a link to the challenge is welcome, the review request needs to be complete when the challenge site is unavailable.
3,401 questions
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Unix WC Implementation V2
Code: https://github.com/Loki-Astari/Puzzle/tree/master/wc
Challenge: https://codingchallenges.fyi/challenges/challenge-wc/
Previous attempt: Unix WC Implementation
The original one would scan a 50M ...
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Unix WC Implementation
Code: https://github.com/Loki-Astari/Puzzle/tree/master/wc
Challenge: https://codingchallenges.fyi/challenges/challenge-wc/
wc.cpp
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JSON Parser in C++
I wrote a JSON parser for a coding challenge: https://codingchallenges.fyi/challenges/challenge-json-parser
It's a recursive descent parser that just tells whether the JSON string is of proper syntax.
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Advent of Code 2016 Day 14 - Part 1
TL;DR: 5 ms for part one and 0.75 seconds for part two (multi-threaded on an aged i13900K laptop); the fiddle also works as a LINQPad script (a cleaned-up version for only part one is at the end of ...
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LeetCode 22. Generate Parentheses (C++)
The task is taken from LeetCode. I would appreciate an assessment of whether my coding style follows good practices. I'm fairly familiar with algorithms and data structures so I'm not really looking ...
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LeetCode 2. Add Two Numbers
The task is taken from LeetCode. I would appreciate an assessment of whether my coding style follows good practices, and if there are any habits or patterns you would find concerning when working ...
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LeetCode 3542: Minimum Operations to Convert All Elements to Zero
I am working on this LeetCode problem where I have to count the minimum number of operations to make all elements in an array equal to zero 3542. Minimum Operations to Convert All Elements to Zero
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Finding a sequence of xors to change a to b
I'm resolving a problem from CodeForces: C. Beautiful XOR. This is what the code is supposed to do:
You have two numbers a and b.
You must transform a into b using XOR operations (...
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Check whether a binary tree is symmetric
I implemented a recursive solution that compares the left and right subtree in mirrored fashion. It works for my test cases, but I would like to know if there are any best practices that would make ...
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C# quicksort implementation (LeetCode Sort an Array)
I implemented quick sort after merge sort as part of LeetCode question for sorting an array. The solution code can be found at https://leetcode.com/problems/sort-an-array/solutions/7180269/i-...
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FOLLOW-UP to the Strength of a Pyramid Top post with a revised code example
As a follow-up to my previous question, I've decided to post a follow-up question with a revised code that accommodates most of the inputs from the previous question's comments, namely:
Used ...
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Strength of a Pyramid Top
I need to solve the following competitive programming problem from coderun.ru:
Strength of a Pyramid Top
The pyramid consists of n horizontal layers of blocks: the first layer contains n blocks, the ...
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Project Euler #909: L-Expressions I
I am trying to solve the 909th challenge of Project Euler. It is basically about replacing specific patterns in a string until no pattern is found. A given string like ...
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Wordsearch Generator (Tracking Success/Failure)
I'm creating a wordsearch generator that takes a list of words and outputs a 10x10 grid (2D array) of letters. This is roughly how it works:
loop over words
use boolean ...
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Third way to place queens and rooks with the higher score (extension of the queen problem)
Here is a third implementation, the second is in my question Place queens and rooks with the higher score (extension of the queen problem) and an initial one is in my answer for the question N queen ...
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