All Questions
Tagged with scalaperformance
21 questions
3votes
1answer
72views
Counting bigrams in XML files in a directory tree
I've written this code in Scala that extracts bigram statistics from the Reuters dataset. It puts the statistics in a Map[String, SortedMap[String, Int]]. For ...
- 223
1vote
4answers
187views
Project Euler problem 92 in Scala, square digit chains
Here is a summary of the problem: "A number chain is created by continuously adding the square of the digits in a number to form a new number until it has been seen before... How many starting ...
- 65
1vote
1answer
664views
Take a number and sum its digits raised to the consecutive powers
I am new to Scala have to solve this problem: If you have number "xy" should equal sum of consecutive powers of its digits xy = x^1 + y^2 For example, take the number 89 and you should ...
- 111
2votes
2answers
155views
Get the highest role of a user across all the organizations he is member of
I have a function that looks like this: ...
- 123
2votes
1answer
95views
Project Euler 23 in Scala (non-abundant sums)
I recently overhauled my solution to Project Euler Problem 23 (which asks for the sum of all positive integers which cannot be written as the sum of two abundant numbers) to move it from an imperative ...
- 65
5votes
1answer
264views
Scala Docx generator from CSV input, using the docx4j library and Scala Swing
I am working on an application which takes as input a CSV file containing a list of attributes and a .docx template containing variable names equal to the columns ...
- 53
1vote
2answers
233views
Find the most frequent character in a string
I'm trying to solve this problem https://community.topcoder.com/stat?c=problem_statement&pm=40 Given a string made up of ONLY letters and digits, determine which character is repeated the ...
- 209
8votes
1answer
351views
Sieve of Eratosthenes performance; Scala very slow compared to Node.js
I am new to Scala so it might show. I am learning it for one of my classes and have to write a performance benchmark. I have written the Sieve of Eratosthenes in both Node.js and Scala, and my Node.js ...
- 384
6votes
2answers
1kviews
Monte-Carlo method to estimate Pi runs slower in multiple threads, than in single thread
I'm learning Scala, and I wrote a program to estimate the value of Pi. When I'm using multiple threads, it takes 5-6 times longer to calculate the same iterations. I wrote a similar program in Java, ...
- 201
4votes
1answer
199views
Solving a digitwise addition equation in Scala
I've written the following codes in Scala and Java to solve cryptarithmatic problems. E.g. For SEND+SOME=MONEY, assign the digits 0 to 9 such that the equation holds true. The algorithm I've used is ...
6votes
1answer
599views
Conway's Game of Life in Scala
To learn Scala, coming from Java and Python, I'm attempting to program an implementation of Conway's Game of Life. I've implemented two different approaches so far, with the first being so bad I'm ...
- 177
2votes
1answer
96views
Checking whether a game board is full
I have a method in Scala that checks if a game board is full or not. To speed this method up, I return inside the nested for loop to break out of both of them and stop execution. How would I achieve ...
- 123
2votes
2answers
427views
Comparing equivalent Scala and C# string-manipulation code - with Scala running much slower
I am very early in my journey of learning Scala, and I was doing challenges on hackerrank.com to get used to the syntax. As I finished one (very trivial) challenge, I noticed that the run times seem ...
- 123
4votes
2answers
132views
Timing Project Euler Problem 1
Is there a better way to time the functions and print the result and function name dynamically? ...
- 213
2votes
1answer
387views
Testing Promises vs Lock performance
I'm not sure if my lock usage is correct and safe. I wanted to know what will be best approach to deal with situation when one thread have to wait for being initialized by another so I written this ...
- 121
