All Questions
22 questions
2votes
1answer
204views
Sorting an assortment of strings and integers together, while keeping them separate
I put a solution to this coding problem together. The problem is this: Create a function that takes an array, finds the most often repeated element(s) within it and returns it/them in an array. The ...
- 143
4votes
1answer
245views
Recursive Ruby merge sort
I have implemented a merge sort in Ruby. (Yes, I know, there's Array#sort) I would like to get feedback on code quality and optimization. ...
- 308
3votes
2answers
244views
Alphabetically sorted numbers
This exercise involves taking an array of numbers and sorting them alphabetically. For example, [1,2,3,4] would return as [4,1,3,2] I mapped the array first, returning an array of words, then sorted ...
- 165
2votes
2answers
211views
Given an arbitrarily large file containing integers, return the largest N numbers, highest first
I've written a top_n program in Ruby, which does pretty much exactly what the title says, as part of a coding exercise. I'm trying to learn about how to sort ...
0votes
1answer
180views
Merge sort for an integer array in Ruby
I've implemented merge sort an integer array. Should I change them to more meaningful names? Overall, any further suggestions on this code? I would like to improve my coding style and to shorten the ...
8votes
0answers
128views
Stable variation of built-in sort
Ruby's built-in sorts are unstable. The stable_sort gem monkey-patches Ruby's built-in library to have stable sorts which include nearly all the functionality of the built-in sorts, but with the ...
- 3,284
3votes
2answers
400views
Ruby bubble sort algorithm
I'm just looking for constructive criticism of my Ruby implementation of a bubble sort algorithm. ...
user44869
4votes
3answers
5kviews
Sort array of hashes with nil values last
I wrote a method which sorts an array of hashes by given hash keys. The method should put nil values at the end. ...
- 486
4votes
3answers
264views
Generate word list based on Spanish text file
I'm a beginner and wrote a program that takes a text file and writes a downcased vocabulary list to another text file. I intend to use it mainly to work with text in Spanish, so I added a line to ...
- 211
4votes
2answers
2kviews
Rails conditional sorting based on params
The following code sorts the current users bid model items based on a param condition :bid_status. It starts to get messy when checking if the project space (...
4votes
2answers
360views
Ruby Interrupted Bubble Sort
Working through CodeEval's Interrupted Bubble Sort, I have a working algorithm, but there's a speed issue. I'm trying to do this with Ruby and I keep getting an error that it's timing out after 10 ...
- 143
7votes
2answers
436views
Bubble sort in Ruby
For practice, I tried implementing Bubble sort in Ruby. I wasn't very sure how nested for loops would look like in Ruby. Is this the 'right way' to do this in Ruby? I found this question, but it looks ...
0votes
1answer
108views
Reducing the sorting time of a large number of numbers
I have to sort many large numbers in a given time limit. The program below works, but not when the test cases reaches \$10^6\$, in which case it exceeds the time limit. ...
- 27
7votes
2answers
2kviews
A Ruby sorting program for multiple criteria
This code review expands on an earlier one that deals with generating a football table from match data. This review deals with ordering said table based on several criteria. Your opinions/...
- 2,034
3votes
3answers
418views
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
