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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...

3 years ago

Solved

Wheat on a chessboard pt 1
If a chessboard were to have wheat placed upon each square such that one grain were placed on the first square and each successi...

3 years ago

Solved

Easy Sequences 6: Coefficient sums of derivatives
Consider the polynomial function and its first-order derivative . The sums of the coefficients of P and P', are and , respecti...

3 years ago

Solved

Easy Sequences 5: Project Euler Problem 1 - Again!
We are all familiar with Project Euler Problem 1. This time let's try it on bigger multiples and larger range. Find the sum of ...

3 years ago

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Easy Sequences 11: Factorial Digits without Trailing Zeros
Here is an easy one... It is not difficult to count the number of digits of the factorial of a given number. For example for 'n...

3 years ago

Solved

Chess performance
After Problems <http://www.mathworks.com/matlabcentral/cody/problems/3054-chess-elo-rating-system/ 3054> and <http://www.mathwor...

3 years ago

Solved

Identify eban numbers

3 years ago

Solved

Characterize the final state of the digit inventory sequence

3 years ago

Solved

Find the nth term in the digit inventory sequence

3 years ago

Solved

Characterize the final state of another digit inventory sequence

3 years ago

Solved

Sunday bonus
Submit a solution on any Sunday and you will get 10 points. Only for MATLAB fans!

3 years ago

Solved

RGB to CMYK
Convert an RGB code to the corresponding CMYK code for printing. The RGB input is a [1×3] double array between 0 and 1. ...

3 years ago

Solved

Make a Pandiagonal Prime Magic Square: 11 x 11
This Fun with Primes Challenge is to create a Pandiagonal Prime Magic Square of size 11x11 given eleven APk sequences with 10 co...

3 years ago

Solved

Optimum Egyptian Fractions
Following problem was inspired by <http://www.mathworks.com/matlabcentral/cody/problems/2126-split-bread-like-the-pharaohs-egypt...

3 years ago

Solved

Leftovers? Again?!
I am thinking of a positive number X. To determine what number I am thinking of, I will give you two 1xN vectors. The first ve...

3 years ago

Solved

TRON challenge
Create a solver for the classic arcade TRON game <<http://www.alfnie.com/software/figtron.png>> *Description* Your func...

3 years ago

Solved

Mirror, mirror on the wall, who is fairest of them all?
The Elo rating system was featured in the movie *The Social Network* during the <https://www.youtube.com/watch?v=BzZRr4KV59I/ al...

3 years ago

Solved

James Bond film count
Twenty-three James Bond films have been produced, in the years 1962, 1963, 1964, 1965, 1967, 1969, 1971, 1973, ... 197...

3 years 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...

3 years ago

Solved

Index of neighbor pixel with steepest gradient
Unlike in various applications, where the gradient of a two dimensional matrix is calculated in x and y direction, the gradient ...

3 years ago

Solved

2D - Mean Filter
Assume you are given an "image" matrix of size NxM. Reduce the image noise by implementing a mean filter window of size 9 (a 3x3...

3 years ago

Solved

Create an 8-color version of an image
This problem was inspired by a tweet I saw from @MATLAB regarding <http://www.mathworks.com/matlabcentral/fileexchange/37816-the...

3 years ago

Solved

Find the Area of a Polygon
Consider 2-D geometry and assume that the points are given in form of rows of a matrix. Find the area of polygon enclosed by the...

3 years ago

Solved

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 years ago

Solved

Generating random matrix with given probability mass function
Inspired by <http://www.mathworks.com/matlabcentral/cody/problems/2356-simulating-the-selection-of-a-state-with-given-probabilit...

3 years ago

Solved

Simulating the selection of a state with given probabilities
Lets say we have 3 different states [1,2,3] with the probabilities of occurrences of each state is given as [0.5 0.2 0.3]. Which...

3 years ago

Solved

Create a random vector of integers with given sum
Your task today is to write a function that returns a vector of integer numbers, between, and including, 1 and m, of which the s...

3 years ago

Solved

Radians to Degrees
Convert radians to degrees.

3 years ago

Solved

Find Min and Max Differences in a Vector
Given an array of integers, return the absolute largest and smallest (non zero) difference between any two numbers in the array....

3 years ago

Solved

union without repitition
Let a = [9 9 9 9 9 9 8 8 8 8 7 7 7 6 6 6 5 5 4 2 1] b = [1 1 1 3 3 3 3 3 4 4 4 4 4 10 10 10] Output should be [9 8...

3 years ago