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# Christos Saragiotis

### Saudi Aramco

Last seen: 3 months ago Active since 2003

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Solved

Scrabble Scores - 3
This problem is part of a set of problems that successively develop a more sophisticated Scrabble scoring routine. The point dis...

6 months ago

Solved

Scrabble Scores - 2
An <https://www.mathworks.com/matlabcentral/cody/problems/56-scrabble-scores introductory Cody problem> asks the user to score a...

6 months ago

Solved

Scrabble Scores
Given a word, determine its score in <http://en.wikipedia.org/wiki/Scrabble Scrabble>. The input string will always be provi...

6 months ago

Solved

Returning a "greater than" vector
Given a vector, v, return a new vector , vNew, containing only values > n. For example: v=[1 2 3 4 5 6] n=3 vNew =...

6 months ago

Solved

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

6 months ago

Solved

Calculate the derivative of a polynomial
Example: in = [ 1 1 1 ] out = [ 2 1 ]

6 months ago

Solved

Create a dictionary
The goal is to write a function that returns a dictionary from a list of words or phrases and their definitions. Here is an exam...

6 months ago

How can I change the time axis unit in a spectrogram from minutes to seconds?
Deborah, you might want to give us your code, then everything will be much simpler.

4 years ago | 0

Solved

Smith numbers
Return true if the input is a Smith number in base ten. Otherwise, return false. Read about Smith numbers at <http://en.wikipedi...

8 years ago

Solved

Find the position of last minimum value in an integer array with numbers
If x = [2 6 4 9 -10 3 1 5 -10] then the output should be 9, because last minimum value (-10) lies at the 9th position.

8 years ago

Solved

Unit Matrix
Given n, you should return an n-by-n unit matrix. Example: If input is n=2 then A = [ 1 0 0 1 ] If input ...

8 years ago

Solved

Find nth maximum
Find nth maximum in a vector of integer numbers. Return NaN if no such number exists. x = [2 6 4 9 -10 3 1 5 -10]; So ...

8 years ago

Solved

Signed Magnitude
For a given input vector, return the value that is furthest from zero. For example, if x = [1 2 -12] return -12.

8 years ago

Solved

Count decimal digits of a number
* Given an integer number you have to return the number of its digits. * For example 248 has 3 digits and 1589 has 4 digits ...

8 years ago

Solved

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

8 years ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

8 years ago

Solved

Given a and b, return the sum a+b in c.

8 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

8 years ago

Need to Decrease the Width of FFT
Dear Chirag, From what you say, I understand that you want to decrease the df of your spectrum. You know that df = 1/(N dt), ...

10 years ago | 1

Submitted

Plotstack
A plot utility, to plot graphs one over the other (or one next to the other vertically)

Submitted

Peaks picking
Finds peaks or troughs in a vector o 2-D matrix.

Submitted

Graphical convolution animation
Shows graphically the stages of discrete convolution for any two 1-D signals (educational tool).

Submitted

Lomb normalized periodogram
Both functions calculate the Lomb-Scargle periodogram (aka Gauss-Vanicek/Least-squares spectrum)

Submitted

Fresnel integrals
Calculates FresnelC, FresnelS integrals and their variations (C_1, C_2 and S_1 and S_2)

Submitted

Laplace random variables
This function generates random numbers distributed according to the Laplace distribution

Submitted

Actual zero or any-value crossing
Finds actual zero (or any other value) "actual" crossings