Jakub Rysanek

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437 total contributions since 2014

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Submitted

EUROSTAT data downloading facility
Automated data importing tool with time series management and visualization capabilities

2 years ago | 6 downloads |

Solved

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

3 years ago

Solved

Pernicious Anniversary Problem
Since Cody is 5 years old, it's pernicious. <http://rosettacode.org/wiki/Pernicious_numbers Pernicious number> is an integer whi...

3 years ago

Solved

Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Submit your answer to this problem a multiple of 5 seconds after the hour. Your answer is irrelevant; the only thing that matte...

3 years 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 ...

3 years ago

Solved

How to subtract?
* Imagine you need to subtract one number from another using MATLAB. * You will not be using eval for this task. * Given two A...

3 years ago

Answered
Differentiation without symbolic toolbox. Is it possible numerically?
<https://www.mathworks.com/matlabcentral/fileexchange/59438-symbolic-derivatives>

4 years ago | 0

Solved

Rotate a matrix for 180 degree
Rotate a matrix for 180 degree for eg: x=[1 2 3 4] y=[4 3 2 1]

4 years ago

Solved

Rainbow matrix
Create a "rainbow matrix" as described in the following examples Input = 3 Output = [ 1 2 3 2 3 2 ...

4 years ago

Solved

Find the index of the first occurrence of a value in a matrix
Given a matrix of scalars, find the first occurrence of -1 in each column. Output NaN for a column which does not contain the va...

4 years ago

Solved

Calculating Sign Changes in a Row Vector(No Element Is Zero)?
For a row vector V=[7 1 2 -3] has one sign change from 2 to -3. So N=Sign_Changes(V) must return N=1; V=[5 9 -2 7]; h...

4 years ago

Solved

Where is she?
Given the numbers 12, 3, 6, 9 Tell where the girl is located. That is: Look to your 3 o'clock = look right Example ...

4 years ago

Solved

Get the array of sum for three consecutive numbers in an array
Get the array of sum, for three consecutive numbers in an array. if Input 'x' does not have at-least 3 elements then 'y' shou...

4 years ago

Solved

Find out value of polynomial at different value.
Find out value of polynomial at different value. Example p(s) = s + 8 For s=0, value is 8.

4 years ago

Solved

Rotate counterclockwise a matrix 90 deg with left-bottom element
Example: Input [ 1 2 3 4 5 6 ] Output [ 3 6 2 5 1 4 ]

4 years ago

Solved

first element of matrix
find the first elements of a column matrix

4 years ago

Solved

Join Strings with Multiple Different Delimiters
The idea is to form the string S by interleaving the elements of a cell array of strings DELIMITER and another cell array of st...

4 years ago

Solved

Perl 3: shift
_This is part of a series of perl function which were very helpful for many perl programmers. Could you implement it in Matlab?_...

4 years ago

Solved

Change Vector Value
Change the element of the vector with respect to the element of the direction vector If the element of the direction vecto...

4 years ago

Solved

Can you reshape the matrix?
Given a matrix A, is it possible to reshape it into another matrix with the given number of rows?

4 years ago

Solved

average for three points
how to calculate the average (for each three values of y) y=[2 3 5 3 4 2 3 4 5 3 2 7 8 6 5 5 4 3 3 3 2 ] you ...

4 years ago

Solved

Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?

4 years ago

Solved

If you have matrix A, create matrix B using matrix A as an "element"
A = [1 2 3 4; 5 6 7 8] B = [1 2 3 4 1 2 3 4; 5 6 ...

4 years ago

Solved

Tridiagonal
Return an n-by-n matrix that has a, b, c as the subdiagonal, main diagonal, and superdiagonal entries in the matrix. Example ...

4 years ago

Solved

Generate binary combinations for a given number of bit(s)
Generate the binary combination as in the example below. Example: If you are given: bin_comb(2) The answer will be: ...

4 years ago

Solved

Create Vector containing following elements
Create Vector containing following elements A=[pi eps NaN inf -inf flintmax];

4 years ago

Solved

JOIN STRINGS
There are two given strings 'STRING1' and 'STR ING2'.|monospaced|The output should be 'STRING1 STR ING2' or STr1='Sum';STr2='EQU...

4 years ago

Solved

Vertically stack two vectors
Stack two vectors on top of each-other so that... if A = [1 5 3] and B = [8 6 4] then C = [1 5 3 ; 8 6 4]

4 years ago

Solved

Sum of series VI
What is the sum of the following sequence: Σk⋅k! for k=1...n for different n?

4 years ago

Solved

Test within tolerance
Given a vector of experimental data, D, and a vector of truth data, T, return FALSE if any +/- errors (D-T) are outside a given ...

4 years ago