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Duplicate a character
Duplicate a character 'n' times. Example 1: str='a' n=5 output='aaaaa' Example 2: str='*' n=3 output='***'

ongeveer 11 jaar ago

Problem


Hungry Snake
Who hasn't played <http://en.wikipedia.org/wiki/Snake_%28video_game%29 the Snake game> when they were little? It's quite hard ...

ongeveer 11 jaar ago | 0 | 8 solvers

Solved


Hungry Snake
Who hasn't played <http://en.wikipedia.org/wiki/Snake_%28video_game%29 the Snake game> when they were little? It's quite hard ...

ongeveer 11 jaar ago

Solved


Is this date a palindrome?emordnilap a etad siht sI
Take a MATLAB date number as input, and return true if the date is a palindrome, false if the date is not a palindrome. A date ...

ongeveer 11 jaar ago

Solved


function on a moving window
Create a function that applies an operation (such as @sum, @mean, @std, @norm etc) to a moving window of the data. First exam...

ongeveer 11 jaar ago

Solved


Four quadrant inverse tangent function.
Create a function that returns an array P the same size as X and Y containing the element-by-element, four-quadrant inverse tang...

ongeveer 11 jaar ago

Problem


Dots in a Diamond
Return how many <http://en.wikipedia.org/wiki/Diamond_cubic Diamond Cubic> lattice grid points there are inside a 3D sphere of r...

ongeveer 11 jaar ago | 1 | 22 solvers

Solved


Dots in a Diamond
Return how many <http://en.wikipedia.org/wiki/Diamond_cubic Diamond Cubic> lattice grid points there are inside a 3D sphere of r...

ongeveer 11 jaar ago

Solved


Determine if input is a Narcissistic number
<http://en.wikipedia.org/wiki/Narcissistic_number Narcissistic number> is a number that is the sum of its own digits each raised...

ongeveer 11 jaar ago

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Convert Two Character String into a Binary Vector
Given a string "XOXXO" convert it into a binary vector. [1 0 1 1 0] Paul Berglund implemented an optimal method in <http://ww...

ongeveer 11 jaar ago

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Rank of magic square (for beginners)
Compute the rank r of a magic square of order n WITHOUT rank and magic functions.

ongeveer 11 jaar ago

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Combinations without using nchoosek
You have to generate a matrix with all possible combinations of n elements *taken 2* at a time, *without using nchoosek(1:n,2)* ...

ongeveer 11 jaar ago

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Vector Linear sum: (p1-m1)V1+(p2-m2)V2+...(pK-mk)Vk
Calculate the sum of a Vector times coefficients expressed as two strings. Example: Normal representation [ a b c ], [ p1 ...

ongeveer 11 jaar ago

Solved


Wheat on a chessboard pt 2
If a chessboard were to have wheat placed upon each square such that x grains were placed on the first square and each successiv...

ongeveer 11 jaar ago

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Make a diamond
Given n, odd number > 1, return n by n matrix consist of "null" and "*" characters arranged like a diamond. No toolbox funct...

ongeveer 11 jaar ago

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Fun Race
* Given two unary functions foo and goo. * Check whether foo(0) runs faster than goo(0). * Output 1 if foo is faster, otherwis...

ongeveer 11 jaar ago

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Decoding : Find the value
'u' in the function below is of type char or string and 'v' is of type int or double. function y = your_fcn_name( u, v) ...

ongeveer 11 jaar ago

Solved


chance in percent for minimum K heads when a good coin is tossed N times?
For example, chance is 100% for minimum 0 heads when a coin is tossed 7 times. Chance is 50% for minimum 2 heads when a coin is...

ongeveer 11 jaar ago

Solved


Cody Computer Part 3 - Detect the graphic card used on Cody Computer
In the Cody computer investigation party, you may have already solved : <http://www.mathworks.com/matlabcentral/cody/problems...

ongeveer 11 jaar ago

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chirp again
rise frequency linearly from 0 to frequency f in 1 second and fs samples, initial amplitude must rise smoothly like an aircraft ...

ongeveer 11 jaar ago

Solved


Find the Kronecker Tensor Product without using KRON
The Kronecker Tensor Product is the result of multiplying all elements of a matrix with each of the elements of another matrix. ...

ongeveer 11 jaar ago

Solved


Compute the dilation of a binary image
A basic operation in image analysis is the dilation. Given an image where each pixel is either on or off (black/white, true/fals...

ongeveer 11 jaar 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...

ongeveer 11 jaar ago

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Set a diagonal
Given a matrix M, row vector v of appropriate length, and diagonal index d (where 0 indicates the main diagonal and off-diagonal...

ongeveer 11 jaar ago

Solved


Acidity of vinegar and salts
Assuming: pH (potentia hydrogenii) = - log10(H+ ionic concentration in mol/Liter). For a buffer solution containing acetic acid ...

ongeveer 11 jaar ago

Solved


Who has power to do everything in this world?
There is only one person who is older than this universe. He is Indian version of Chuck Norris.

ongeveer 11 jaar ago

Solved


Compute next 1000-day birthday milestone
Given a birthdate in DD-MMM-YYYY format, compute the next 1000-day birthday milestone. For example, Abraham Lincoln was born on ...

ongeveer 11 jaar ago

Solved


Pythagorean perfect squares: find the square of the hypotenuse and the length of the other side
Given the square root of a square number, *seed*, and a range, *n*, find the square number, *Z* as well as the other side, *y*, ...

ongeveer 11 jaar ago

Problem


Shifted Hexagonal Tiling Dots in a Circle
Return how many <http://en.wikipedia.org/wiki/Hexagonal_grid Hexagonal Tiling> grid points there are inside a circle of radius _...

ongeveer 11 jaar ago | 1 | 23 solvers

Solved


Shifted Hexagonal Tiling Dots in a Circle
Return how many <http://en.wikipedia.org/wiki/Hexagonal_grid Hexagonal Tiling> grid points there are inside a circle of radius _...

ongeveer 11 jaar ago

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