Nikolaos Nikolaou
Physics , Wholesale auctions , Crypto Mining , Renewable Energy
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MATLAB Central Community 20 Year Anniversary Treasure Hunt participant badge
Awarded to Nikolaos Nikolaou on 14 Sep 2021
MATLAB Central Treasure Hunt finisher badge
Awarded to Nikolaos Nikolaou on 08 Oct 2020
Solve all the problems in Sequences & Series II
Awarded to Nikolaos Nikolaou on 06 May 2021
Solve a problem with a best solution
Awarded to Nikolaos Nikolaou on 26 Feb 2021
Solve all the problems in Matrix Patterns III problem group
Awarded to Nikolaos Nikolaou on 30 Dec 2020
Matrix Patterns I Master
Awarded to Nikolaos Nikolaou on 13 Dec 2020
Solve all the problems in Matrix Manipulation II
Awarded to Nikolaos Nikolaou on 10 Dec 2020
Solve all the problems in Indexing IV problem group
Awarded to Nikolaos Nikolaou on 14 Nov 2020
Solve all the problems in Number Manipulation II problem group
Awarded to Nikolaos Nikolaou on 29 Jul 2020
Solve all the problems in Number Manipulation I problem group
Awarded to Nikolaos Nikolaou on 10 Jul 2020
Solve all the problems in Indexing I
Awarded to Nikolaos Nikolaou on 17 Jun 2020
Solve all the problems in R2016b Feature Challenge
Awarded to Nikolaos Nikolaou on 11 Jun 2020
Content Feed
Solved
Cubic Integer Constrained Solution
Find an integral non-trivial solution (x,y,z ~=0) (x=0 or y=0 or z=0 are trivial) for the cubic equation 987,654,321x + ...
1 month ago
Solved
Draw matrix 'Swiss flag'( Euro 2020)
Draw a x-by-x matrix 'Swiss flag' using '0' and '1'.(x is odd and bigger than 4) Example x=5 ...
1 month ago
Solved
3n + 1 Problem (a.k.a The Collatz Conjecture)
The 3n + 1 problem (a.k.a The Collatz Conjecture) Consider the following algorithm to generate a sequence of numbers. Start wit...
2 months ago
Solved
Cancel Middle
Write a function called cancel_middle that takes A, an n-by-m matrix, as an input where both n and m are odd numbers an...
2 months ago
Solved
Double Fibonacci
double_fibonacci takes two integers, each greater than one, as input arguments (it does not have to check the format of the inpu...
2 months ago
Solved
Sort Except Zeros
Sort the numbers in a vector. But the position of zeros should not be changed. Example: sort_except_zeros( [5 3 0 0 2 4] ) == [...
2 months ago
Solved
Find the nth composite number.
Everyone heard about the nth prime number. Let's try to find out the nth composite. For example , 1 is the first composite, 10 i...
2 months ago
Solved
Get to a number faster.
If you start with $1 and, with each move, you can either double your money or add another $1, what is the smallest number of mov...
2 months ago
Solved
Find the number of days in a given year
Given a year number (eg. 2000) as input, find how many days are there in the given year.
2 months ago
Solved
The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...
2 months ago
Solved
Determine the average number of rounds for the following game.
Each round a uniformly distributed random number is picked between 0 and 1. The game ends when the sum of the random numbers is ...
2 months ago
Solved
Right shift an array n times with constant space.
Right shift an array n times with constant space, that is, no extra array can be used. Right shift operation: Last element com...
2 months ago
Solved
Vector creation using linspace
Create a vector y containing n uniformly spaced values between a and b, with a < b. Use linspace.
2 months ago
Solved
Vector creation using colon operator
Create a vector y containing n uniformly spaced values between a and b, with a < b. Use the colon (:) operator.
2 months ago
Solved
Logarithmically spaced vector creation using logspace
Create a vector y containing n logarithmically spaced values between a and b, with a < b. Use the logspace operator.
2 months ago
Solved
Logarithmically spaced vector creation using linspace
Create a vector y containing n logarithmically spaced values between a and b, with a < b. Avoid using logspace and use the linsp...
2 months ago
Solved
Stacking vectors into a matrix
Given a 4x1 vector a, and a 2x2 matrix b, create a matrix M in which the first 2 rows are each identical to a and the last two r...
2 months ago
Solved
Identify Ruth-Aaron numbers
After Hank Aaron hit his 715th home run and passed Babe Ruth’s total of 714, Carl Pomerance noticed that the union of the prime ...
2 months ago
Solved
Matrix convolution
A certain convolution step involves an elementwise multipication between two 3x3 matrices and taking the resulting sum of the el...
2 months ago
Solved
Matrix Indexing
Given a matrix A and scalars r,c,i, find the product of two elements, with the first element located at row r and column c (doub...
2 months ago
Solved
MATLAB Basics: Complex Numbers
For a given complex number, x, return the real and imaginary parts as a vector, y = [Real Imaginary].
2 months ago
Solved
Compute the fractional derivative
Cody Problem 1370 asks us to compute the derivative of a polynomial. This problem extends that idea to fractional derivatives, w...
2 months ago
Solved
Compute the sum of reciprocals of quadratics
Write a function to compute the following sum: See also Cody Problem 46000.
2 months ago
Solved
MATLAB Basics: Complex Conjugates
For a given complex number, x, return the complex conjugate, y.
2 months ago
