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Code Review

Questions tagged [programming-challenge]

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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.

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2votes
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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...
4votes
2answers
509views

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 (...
5votes
5answers
1kviews

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 ...
0votes
3answers
222views

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-...
4votes
3answers
452views

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 ...
5votes
3answers
570views

I need to solve the following competitive programming problem from coderun.ru:Strength of a Pyramid TopThe pyramid consists of n horizontal layers of blocks: the first layer contains n blocks, the ...
7votes
4answers
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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 ...
5votes
2answers
409views

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 wordsuse boolean ...
3votes
2answers
252views

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 ...
4votes
1answer
196views

This is a continuation of the question N queen problem-like (+rooks and a different goal) written by someone else, where I answered.EDIT I continued to work on the subject and a third implementation ...
5votes
3answers
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Project Euler Problem #1Multiples of 3 or 5 states:If we list all the natural numbers below 10 that are multiples of 3 or5, we get 3, 5, 6 and 9. The sum of these multiples is 23.Find the sum of ...
6votes
2answers
459views

Link to kata: linkRank: 6 kyuKata author: @rsalgadoI have been recently learning Ruby-lang and have been attempting to solve the following kata from Codewars involving Goldbach's Conjecture:...
6votes
2answers
732views

Here's my (correct) solution to a HackerRank question:Weather Observation Station 8Query the list of CITY names from STATION which have vowels (i.e., a, e, i, o, and u) as both their first and last ...
6votes
1answer
593views

I am working on a problem on LeetCode.Considering only lowercase characters from 'a' to 'z', I have written some Java code to check if a permutation of a given pattern is a substring of a given ...
1vote
1answer
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I'm writing JS for the FreeCodeCamp todo list; the corresponding HTML and CSS for this can be found on their page. I have made one edit to the HTML - the button with type "submit" has been ...

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