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Find nearest prime number less than input number

Find nearest prime number less than input number. For example: if the input number is 125, then the nearest prime number whi...

10 dagar ago

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Angle Between Analog Clock Hands

Given a datetime variable t, return the angle (in degrees) between the hour and minute hands of an analog clock at the time repr...

24 dagar ago

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Triangle Coordinates

Given a natural number n, return two -element vectors, x and y, containing the coordinates of a triangular arrangement of points...

24 dagar ago

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Create block matrix of integers (j+k-1) - Part II

Given m, n, p, and q, create an m-by-n matrix made up of submatrices, each sized p-by-q (if possible - the last row and column o...

24 dagar ago

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Extract the Acrostic Message

An acrostic cipher is a way of embedding one message within another by taking the first (or last) word of each line. Given a str...

24 dagar ago

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Boustrophedon

Given a vector v and a positive integer n, return an m-by-n matrix containing the elements of v row-wise, alternating left-to-ri...

24 dagar ago

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Create block matrix of integers (j+k-1) - Part I

Given m, n, p, and q, create a matrix of m-by-n blocks (submatrices), each sized p-by-q. The elements of the (j,k)th block all h...

24 dagar ago

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Dartboard Average II

A dartboard arranges the numbers 1 to 20 such that each value is typically flanked by quite different values - for example, 20 i...

24 dagar ago

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Dartboard Average I

A dartboard arranges the numbers 1 to 20 such that each value is typically flanked by quite different values - for example, 20 i...

29 dagar ago

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Possible Rugby Scores

Given a natural number s (> 4), representing a rugby team's score, return an n-by-3 matrix representing all n possible combinati...

29 dagar ago

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Split Even Number Into Two Primes

Given an even whole number n (> 2), return a 2-element vector of primes, p, such that p(1) + p(2) = n. Fun note: technically it...

29 dagar ago

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Determine if Input is Oddish or Evenish (Odd/Even Sum of Digits)

Given a positive integer n, determine whether n is "oddish" or "evenish" - that is, whether the sum of the digits of n is odd or...

29 dagar ago

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Easy Sequences 10: Sum of Cumsums of Fibonacci Sequence

The function F(n) is defined as the set of Fibonacci numbers from the first up to the n-th. S(n) is the result of applying to F,...

3 månader ago

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Number of digits in an integer

Specifies how many digits in a given integer. Example: in=100 ==> out=3

4 månader ago

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Find smallest number to leave a remainder of 1

given a vector of numbers, find the smallest number to be divisible by all of them with a remainder of 1. Note: input numbers wi...

4 månader ago

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Expand 10^n to Powers of 4

Given an integer n, return the coefficients c = [c_n,c_n-1,...,c_0] Such that 10^n = c_n*4^(n) + c_n-1*4^(n-1...

6 månader ago

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Create Circular Perfect Square Sequence

A sequence v(1:N) made of values 1:N can be created for N>31 such that v(i)+v(i+1) is a perfect square. The sum of v(N)+v(1) mus...

6 månader ago

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SatCom #6: Inclination of a Sun-Synchronous Orbit

Satellite and Space Engineering - Problem #5 This is part of a series of problems looking at topics in satellite and space comm...

7 månader ago

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Compute the harmonic numbers

The nth <https://mathworld.wolfram.com/HarmonicNumber.html harmonic number> is defined as the sum of the reciprocals of the inte...

7 månader ago

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SatCom #5: Determine Elliptical Orbit Parameters

*Satellite and Space Engineering - Problem #5* _This is part of a series of problems looking at topics in satellite and space...

7 månader ago

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SatCom #4: Satellite Orbit Altitude

Satellite and Space Engineering - Problem #4 This is part of a series of problems looking at topics in satellite and space comm...

7 månader ago

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SatCom #3: Free Space Path Loss

*Satellite and Space Engineering - Problem #3* _This is part of a series of problems looking at topics in satellite and space...

7 månader ago

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SatCom #2: Gain of a circular 'dish' antenna

Satellite and Space Engineering - Problem #2 This is part of a series of problems looking at topics in satellite and space comm...

7 månader ago

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SatCom #1: Wavelength of an electomagnetic wave

*Satellite and Space Engineering - Problem #1* _This is the first of a series of problems looking at topics in satellite and ...

7 månader ago

Solved

Generate a Parasitic Number

This problem is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/156-parasitic-numbers Problem 156>. ...

8 månader ago

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Frugal number

check whether n is a frugal number * a frugal number is a natural number in a given number base that has more digits than the...

8 månader ago