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Performance - summation
Given a vector of natural numbers x = [1,2,3,...,N] compute the sum of its elements by not stressing the machine too much...

6 years ago

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Explode string
Break a sentence into cell of words

6 years ago

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Wrap-around effect
In vector x of length n we define (n+1) position as going back to the first position (so called wrap-around effect). Can you ret...

6 years ago

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Return strings encapsulated by braces
Return all substrings that are contained within braces ({}). For example: str = 'x = rho*x{-1} + (1-rho)*y{+1}'; when...

6 years ago

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given number is power of n or not?
Check weather The input is power of n or not? for example x=8,n=2 --> true x=6,n=2 --> false

6 years ago

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Ugly numbers - 02
Ugly numbers are those whose prime factors are 2, 3 or 5. find the nth ugly number. n.b. unlike the previous problem,trivi...

6 years ago

Problem


Ugly numbers - 02
Ugly numbers are those whose prime factors are 2, 3 or 5. find the nth ugly number. n.b. unlike the previous problem,trivi...

6 years ago | 1 | 20 solvers

Solved


Upper Matrix Mock
Given a vector v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 0 1 3 6 9; 0 0 1 3 6; 0 0 0 1...

6 years ago

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Maximum sum from any 2 numbers with a variable number of inputs
Given a variable number of inputs, combine any 2 numbers from the inputs and output the maximum sum the combinations can generat...

6 years ago

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Count me in
Count the number of occurrences of the second input in the first input Ex. x1 = 12344455511; x2 =2; output = 1 ...

6 years ago

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Modified Upper Matrix Mock
Given a vector v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 0 3 6 9 11; 0 0 6 9 11; 0 0 0 9 11; 0 0 0...

6 years ago

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Create tangent function out of sine function only
Please don't use cosine and tangent functions

6 years ago

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Calculate sin(x) without sin(x)
Calculate y = sin(x) x = 0 -> y= 0 without the use of sin(x) or cos(x)

6 years ago

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Calculate the hypotenuse of a right triangle without using ^ and sqrt ()
Find out the hypotenuse of right triangle. Say a = 4, b = 3 then c = 5 Please don't use ^ and sqrt() function.

6 years ago

Solved


Ugly numbers - 01
Ugly numbers are those whose prime factors are 2, 3 or 5. find the nth ugly number.

6 years ago

Problem


Ugly numbers - 01
Ugly numbers are those whose prime factors are 2, 3 or 5. find the nth ugly number.

6 years ago | 0 | 25 solvers

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Simple Decoder Ring
The stereotypical _decoder ring_ is remembered as a cereal box prize from the 1950s. Kids learned about cryptography by startin...

6 years ago

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Simple Caesar Cypher - shift encrypt a message given an index number
A Caesar cypher is a simple shift encryption method. Your goal is to create a function that allows a user to input a string and ...

6 years ago

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Split a given string from the first instance of a given character
A simple operation to split a given string into two substrings at the point where the desired character is first found. e.g. ...

6 years ago

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Regex match
Many regular expression engines have a simple function to quickly know whether a regular expression entirely matches a string or...

6 years ago

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Neither minima nor maxima
Input v is a vector. Return all the elements of v which are not a local minimum or maximum. Example: v = [1 2 3 4 5] Ou...

6 years ago

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Find the distance between runs
Another question inspired by the <http://uk.mathworks.com/matlabcentral/answers/?s_tid=gn_mlc_an answers forum>: A vector of ...

6 years ago

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Set a Soroban Abacus
*Description* This problem is the inverse of <http://www.mathworks.com/matlabcentral/cody/problems/136-read-a-soroban-abacus ...

6 years ago

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Bleed non-zeros to the right using REGEXP, and that sort of cheatcodess...
This one is quite similar to <http://www.mathworks.nl/matlabcentral/cody/problems/1998-bleed-non-zeros-to-the-right>. But thi...

6 years ago

Solved


Bleed non-zeros to the right
What a title! Yet, it says what I mean. You get a vector, some values and a lot of zeroes. Every zero is replaced by the firs...

6 years ago

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The Top 5 Primes
This problem series invites you to solve two simple problems related to the integer NUMBER FIVE, in order to celebrate <https://...

6 years ago

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DC chopper
Input x is the sampled signal vector, may have both AC and DC components. output vector y should have AC components removed then...

6 years ago

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Wind outward from the center ...
Create an n-by-n matrix with elements ranging from 1 to n^2 in a rectangular spiral pattern. Example if n = 5 : 21 ...

6 years ago

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Decrypt the cypher using XOR encryption (for beginners)
Inspired by Project Euler n°59 Each character on a computer is assigned a unique code and the preferred standard is ASCII (...

6 years ago

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Did you say please? - Find one string within another without strfind or regexp/regexpi
For a given string sentence, determine if the string word 'please' is present or not. If so, return the string 'OK', else return...

6 years ago

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