All Questions
11 questions
2
votes
2
answers
177
views
Finding minimum steps required to traverse from source to terminal
Hello everyone this is my first post here so please do critique my post if there's anything.
I have made a program intended to pass a programming challenge on open.kattis.com, here.
It should do as ...
- 23
3
votes
0
answers
214
views
Codingame: Great Escape bot in Ruby - Follow-up
This is a follow-up to Codingame: Great Escape bot in Ruby.
As mentioned there, my first reasonably sized Ruby project is a bot for CodinGame's Great Escape contest (here is a sample gameplay video).
...
- 465
2
votes
3
answers
285
views
Project Euler - Smallest multiple (Ruby)
My code is very slow to run, and I am trying to find a way to make it more efficient. I know there must be a better way than to write each modulo operation.
The goal of the script is to find the ...
- 21
6
votes
1
answer
165
views
Check sum of all primes under two million
I'm exploring ruby by writing a code that checks the sum of all prime numbers under two million. As I am still in the process of learning ruby, I'm unfamiliar with all the standards and best practices....
- 163
3
votes
1
answer
1k
views
Project Euler #10 in Ruby. Three ways to sum primes below 2 million
Question:
Add all prime numbers smaller than 2,000,000.
The first method is done by deriving own is_prime? method:
...
- 387
3
votes
2
answers
76
views
Project Euler #1 in Ruby with duration
I have done #1 of Project Euler's in Ruby. Using two different approaches. One uses set, another uses reduce.
...
- 387
0
votes
4
answers
218
views
Finding powers of multiple array pairs
I'm doing a challenge on TalentBuddy that requires you to find the powers of multiple array pairs. Since I got the solution right, but not fast enough, I decided I'd ask for help here.
...
- 229
5
votes
2
answers
3k
views
Reverse Game HackerRank Ruby Solution
Problem Statement
Akash and Akhil are playing a game. They have N balls numbered from 0
to N−1. Akhil asks Akash to reverse the position of the balls,
i.e., to change the order from ...
- 153
3
votes
2
answers
182
views
Building a list - why is this code inefficient?
I'm attempting this code challenge.
Here's my code modified to handle one simple example test case:
...
- 299
4
votes
2
answers
2k
views
Performance of Codility MaxCounter challenge solution
I'm doing some of the Codility challenges using Ruby. The current challenge is "The MaxCounter," which is described as:
Calculate the values of counters after applying all alternating operations: ...
- 693
3
votes
3
answers
418
views
Speed up counting sort algorithm in Ruby
I'm attempting this simple HackerRank counting sort problem but testcase #3, which has 100,000 test cases, is timing out.
Is there something particularly inefficient about this code?
...
- 299