# Mark Posen

### RPC Telecommunications Ltd.

I am a satellite communication engineer, specialising in spectrum and regulatory engineering, interference analysis and frequency coordination.

I have been programming since the mid-1970s (I used to be able to code by hand-punching Hollerith Cards!) but for the past 20-years or so I have really not done much coding at all. I'm trying to remedy that by learning MATLAB!

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Solved

Doubling elements in a vector (★★)

(copy of prob. 1024) Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] t...

18 minutes ago

Solved

Vector of digits (★★)

Given a positive integer x, construct a vector y with all the digits of x in the order of appearance in x. Thus, if x = 172...

8 hours ago

Solved

Create a vector of the first n odd numbers (★)

If n = 10, your program should return a vector y, where y = [1 3 5 7 9 11 13 15 17 19].

9 hours ago

Solved

Average of corner elements of a matrix (★★)

(copy of prob 2235) Calculate the average of corner elements of a matrix. e.g. x=[1 2 3; 4 5 6; 7 8 9;] avg = (1+3+7+9)...

9 hours ago

Solved

Median computation (★)

Given a vector of values, compute the median. The median is defined as the middle value in a set of *sorted* data. Thus, if ...

19 hours ago

Solved

Create a vector of the first n natural numbers (★)

If n = 7, your program should return a vector y, where y = [1 2 3 4 5 6 7].

19 hours ago

Solved

Generate n equally spaced "intervals" between -x and x (★)

Given n and x, return a list of numbers (in ascending order) that divides the interval [-x x] into n equal-length intervals. ...

23 hours ago

Solved

Sum of elements in a vector (★)

(copy of Prob. 3) Find the sum of all the numbers of the input vector x. Input x = [1 2 3 5] Output y is 11 <> ...

1 day 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 days 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 days 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 days 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 days ago

Solved

Specific toolboxes

Given a string that is the name of a MATLAB toolbox, return true if it is available on the Cody solvers evaluation system, false...

3 days ago