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arvid Martens


Katholieke Universiteit Leuven

84 total contributions since 2017

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First non-zero element in each column
For a given matrix, calculate the index of the first non-zero element in each column. Assuming a column with all elements zero ...

etwa ein Jahr ago

Question


Multiple GPU setup slower than single GPU
For my research I have to perform a lot of repetition of the same optimization (for statistics). I already found out that my fit...

mehr als ein Jahr ago | 0 answers | 1

0

answers

Question


parfor load balancing chunksize
I have function that uses a parfor (~100 iteration) evaluating another function. However one of the workers is two times faster ...

mehr als ein Jahr ago | 2 answers | 0

2

answers

Question


Titan V using huge amount of memory
Recently I added a second GPU (titan V) to my workstation. When I try to perform my simulations which use a parpool with each wo...

mehr als ein Jahr ago | 2 answers | 0

2

answers

Answered
Parfor loop just hangs, CPU usage goes to zero
I noticed that the problem started to occur after I updated the drivers of the GPUs that are being used during the calculations....

mehr als ein Jahr ago | 1

Solved


Pentagonal Numbers
Your function will receive a lower and upper bound. It should return all pentagonal numbers within that inclusive range in ascen...

mehr als ein Jahr ago

Solved


Birthday cake
It's Cody's 5th birthday, and you've been tasked with putting the candles on the cake. Your goal is to maximize the distance bet...

fast 2 Jahre ago

Solved


Recaman Sequence - III
I want to create a Recaman sequence where the nth number will be 1. So from which integer should I start the Recaman sequence? ...

fast 2 Jahre ago

Solved


Parse me a Lisp
*Description* In Lisp and its variants, function calls are done using parenthesis where the first item in the parenthesis is ...

fast 2 Jahre ago

Solved


Ned's Queens
A tribute to Cody's five-year anniversary should also celebrate the people behind Cody, and in this particular case, our illustr...

fast 2 Jahre ago

Solved


Inscribed Pentagon? 2
Your function will be provided with the five vertices of a pentagon (p) as well as the center point (cp) and radius (r) of a cir...

fast 2 Jahre ago

Solved


Circumscribed Pentagon?
Building off of <https://www.mathworks.com/matlabcentral/cody/problems/44368 Problem 44368>, your function will be provided with...

fast 2 Jahre ago

Solved


Pair Primes
Let's define pair primes as follow; * *For 2 digits numbers:* 11 and 17 are pair primes because both of them are 2 digits pri...

fast 2 Jahre ago

Solved


Hexagonal numbers on a spiral matrix
Put hexagonal numbers in a ( m x m ) spiral matrix and return the sum of its diagonal elements. Formula of hexagonal numbers ...

fast 2 Jahre ago

Solved


Cache me Outside
The test suite includes a simple recursive Fibonacci sequence generator, but it's terribly inefficient. One simple method for im...

fast 2 Jahre ago

Solved


Is this a valid Tic Tac Toe State?
For the game of <https://en.wikipedia.org/wiki/Tic-tac-toe Tic Tac Toe> we will be storing the state of the game in a matrix M. ...

fast 2 Jahre ago

Solved


Digit concentration in Champernowne's constant
Consider the first 50 digits of Champernowne's constant 0.12345678910111213141516171819202122232425262728293... The...

fast 2 Jahre ago

Solved


Group-wise Euclidean distance
*Input*: * *x* —— An array of size *n-by-d*, where each row vector denotes a point in a d-dimensional space; * *g* —— A gro...

fast 2 Jahre ago

Solved


An asteroid and a spacecraft
Imagine a non-relativistic simple situation. Assume positions p0, p1, p2, and p3 are three dimensional Cartesian coordinates...

fast 2 Jahre ago

Solved


Sums of Distinct Powers
You will be given three numbers: base, nstart, and nend. Write a MATLAB script that will compute the sum of a sequence of both ...

fast 2 Jahre ago

Solved


5th Time's a Charm
Write a function that will return the input value. However, your function must fail the first four times, only functioning prope...

fast 2 Jahre ago

Solved


"Cody" * 5 == "CodyCodyCodyCodyCody"
*Alice*: What? *"Cody" * 5 == "CodyCodyCodyCodyCody"*? You've gotta be kidding me! *Bob*: No, I am serious! Python supports...

fast 2 Jahre ago

Solved


Acid and water
Assume that there is a 100 liter tank. It is initially filled with just distilled water. It is continuously drained at R...

fast 2 Jahre ago

Solved


Number of Even Elements in Fibonacci Sequence
Find how many even fibonacci numbers are available in the first d numbers. Consider the following first 14 numbers 1 1 2...

fast 2 Jahre ago

Solved


Energy of a photon
Given the frequency F of a photon in giga hertz. Find energy E of this photon in giga electron volts. Assume h, Planck's ...

fast 2 Jahre ago

Solved


How to subtract?
* Imagine you need to subtract a few numbers using MATLAB. * You will not be using eval for this task. * Given two ASCII strin...

fast 2 Jahre ago

Solved


Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Given a number _n_, return the terminal value of the number chain formed by summing the square of the digits. According to the P...

fast 2 Jahre ago

Solved


Fibonacci-Sum of Squares
Given the Fibonacci sequence defined by the following recursive relation, * F_n = F_(n-1) + F_(n-2) * where F_0 = 0 and F_1 ...

fast 2 Jahre ago

Solved


Return the Fibonacci Sequence
Write a code which returns the Fibonacci Sequence such that the largest value in the sequence is less than the input integer N. ...

etwa 2 Jahre ago

Solved


Alternating sum
Given vector x, calculate the alternating sum y = x(1) - x(2) + x(3) - x(4) + ...

etwa 2 Jahre ago

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