Solved

List the erauqs

5 years ago

Solved

List the emirps

5 years ago

Solved

Draw a '0' in a one matrix!

5 years ago

Solved

Making change
Given an amount of currency, return a vector of this form: [100 50 20 10 5 2 1 0.5 0.25 0.1 0.05 0.01] Example: Input a = ...

5 years ago

Solved

The Goldbach Conjecture, Part 2
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

5 years ago

Solved

The Goldbach Conjecture
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

5 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...

5 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. ...

5 years ago

Solved

Create different color vectors.
When producing figures with multiple lines on, you often want the lines to all be visible and different colors. Given the need f...

5 years ago

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Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

5 years ago

Solved

Acid and water
⚖ ⚖ ⚖ ⚖ ⚖ ⚖ ⚖ ⚖ Assume that there is a 100 liter tank. It is initially fi...

5 years ago

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Help the Patriots get to the Super Bowl
Given a football by the Patriots, return it to them with 2 psi less air in it. (The original psi is passed as a number to the...

5 years ago

Solved

Toeplitize a matrix
Similar to <http://www.mathworks.com/matlabcentral/cody/problems/3094-hankelize-a-matrix Problem 3094. Hankelize a matrix>, now ...

5 years ago

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Add more zeros
Find code that adds one 0 to each sequence of 0 in a string (composed with only 0 or 1). For example: '1010' -> '100100' ...

5 years ago

Solved

Find same numbers touching each other...
So the goal here is to find any number that is equal to its immediate neighbors and mark it true. Here is some examples: x...

5 years ago

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Go back n times
You will be given a column vector (such as x = [1; 2; 3; 4; 5; 6]). If (n=3) you will return following; [ 1 NaN NaN NaN ...

5 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...

5 years ago

Solved

Determinant without using det()
Given a square matrix A, compute the <http://en.wikipedia.org/wiki/Determinant determinant> of A. Note that you may not use t...

5 years ago

Solved

Number Puzzle - 105

5 years ago

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Draw Letter 'L'

5 years ago

Solved

Mersenne Primes vs. All Primes
A Mersenne prime (M) is a prime number of the form M = 2^p - 1, where p is another prime number. <https://www.mathworks.com/matl...

5 years ago

Solved

Generate Square Wave
Generate a square wave of desired length, number of complete cycles and duty cycle. Here, duty cycle is defined as the fraction ...

5 years ago

Solved

Back to basics 9 - Indexed References
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix and row and column, output the index of th...

5 years ago

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Number of toolboxes?
Return a number equal to the number of toolboxes available to the Cody solvers.

5 years ago

Solved

Back to basics 17 - white space
Covering some basic topics I haven't seen elsewhere on Cody. Remove the trailing white spaces from the input variable

5 years ago

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Back to basics 5 - Clipboard
Covering some basic topics I haven't seen elsewhere on Cody. Copy the input string to the clipboard

5 years ago

Solved

Back to basics 13 - Input variables
Covering some basic topics I haven't seen elsewhere on Cody. Return as a string the name of the input variable to the functio...

5 years ago

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Function composition
Write a function that accepts two function handles f and g and returns the composition h. That is, h = (f o g)(x) = f(g(x)) ...

5 years ago

Solved

Function Iterator
Given a handle fh to a function which takes a scalar input and returns a scalar output and an integer n >= 1, return a handle f...

5 years ago

Solved

Number Puzzle - 108

5 years ago