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Evil Number

Check if a given natural number is evil or not. Read more at <https://oeis.org/A001969 OEIS>.

12 mois ago

Solved

Sum of adjacent elements in a vector

Given a vector v, return a vector s containting the sum of every two adjacent elements in the vector. Every element s(i) cont...

12 mois ago

Solved

Generate a string like abbcccddddeeeee

This is the string version of Problem 1035. <http://www.mathworks.com/matlabcentral/cody/problems/1035-generate-a-vector-like-1-...

12 mois ago

Solved

5 Prime Numbers

Your function will be given lower and upper integer bounds. Your task is to return a vector containing the first five prime numb...

12 mois ago

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The Glass Half Full

Identical glasses are placed in a triangular tower structure, such that the top level (L = 1) comprises one glass, the next leve...

12 mois ago

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Counting candies

In a classroom of |'n'| children, every even numbered child gets one big candy and every odd numbered child gets two small candi...

12 mois ago

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Distance a ball travels after throwing vertically

Calculate the total distance *'d'* (in meters) a ball would travel after *'s'* seconds and starting velocity of *'v'* (in m/s). ...

12 mois ago

Solved

Sum of digits of powers of 2

Given n, first, calculate the number 2^n. Then, sum the digits that comprise that number. For example: Input: n = 7 2^n = ...

12 mois ago

Solved

Vector Element Multiplication

Take two incoming vectors, and output the element wise multiplication of the vectors.

12 mois ago

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Find my daddy long leg (No 's')

Given the ratio of the two legs (longer / shorter), and the hypotenuse length, find the value of the bigger leg.

12 mois ago

Solved

Replace x value into y value in string text.

Replace x value into y value in string text. Example text='Hello World' x='World', y='Universe' result='Hello Universe'.

12 mois ago

Solved

Case-insensitive Character Detection

Find the index of a particular character in a string ignoring case. Example Input: x = 'aAbhhfdf' n = 'a' ...

12 mois ago

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Number of occurrences of letter in a text

Given an input text either as a string or as a cell array of strings, return a (1 x 26) matrix containing the number of occurren...

12 mois ago

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Funny problems

Generate the following vector： if n=1 then q=1; elseif n=2 then q=[2 2 1]; elseif n=3 then q=[3 3 3 2 2 1]; ... end

12 mois ago

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Combined Ages 1 - Symmetric, n = 3

You have probably seen the common riddle wherein combined ages are provided and you must determine the individual ages. For exam...

12 mois ago

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Given an input string, generate a variable name out of it

Given an input string, generate a variable name out of it in easy to read format by a programmer. If the input string contai...

12 mois ago

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Number of divisors of a given number

Given a Number n, return the number of his divisors without listing them example: n=14 ; Divisors={1,7,2,14} ; y=4 n=...

12 mois ago

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Check if inputted variable is a string or a number

Check if a inputted variable is a number or a string, given a string input (i.e. '1' is 1 and thus a number, 'a' is a string).

12 mois ago

Solved

Distance between Berlin and New York in km

Use Pythagoras to calculate the distance between two locations in km (based on their respective longitudes and latitudes). Fo...

12 mois ago

Solved

Frequency Analysis of Text

Frequency analysis is a common task in cryptoanalysis. It is essentially counting the occurrences of alphabets (regardless of ca...

12 mois ago

Solved

Write out numbers in words

Write out numbers in words ( range [0-9999] ) with British spelling rules. For example; * 1 > one * 56 > fifty-six * 100 >...

environ un an ago

Solved

Choose group with people

How many ways can you choose n groups of n people from n^2 people, assuming the groups are distinct? The number of people i...

environ un an ago

Solved

Selecting books on MATLAB for experts and beginners (blindfolded)

* Imagine you have been blindfolded and asked to pick up any two books randomly from the table. * There are n books suitable f...

environ un an ago

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Book Club

A book club that has _K_ members, as a group, have to read _N_ books. Return how many different ways the members could read the ...

environ un an ago

Solved

Substring Extraction

In a given string, find the substring between Start_string and End_string. You will have to include or exclude the Start_str...

environ un an ago

Problem

Substring Extraction

In a given string, find the substring between Start_string and End_string. You will have to include or exclude the Start_str...

environ un an ago | 0

Solved

Repeat string n times - 2

This is the two variable version of <http://www.mathworks.com/matlabcentral/cody/problems/42482-repeat-string-n-times Repeat str...

environ un an ago

Solved

how many of the entries are positive?

Given x= sin(linspace(0,10*pi,100)), how many of the entries are positive?

environ un an ago

Solved

Simple Past of Regular Verbs

Given a regular verb, return the simple past. Example Input verb = 'to work' Output simple_past = 'worked'

environ un an ago