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Woodall number
Test whether the input is a Woodall number: <http://en.wikipedia.org/wiki/Woodall_number> _Please do not cheat by simply chec...

10 years ago

Solved


letter yes yes & letter no no
Split a string into two strings, first string has all alphabetic letters, next string has all the rest, keep the order please, o...

10 years ago

Solved


Negative matrix
Change the sign of all elements in given matrix.

10 years ago

Solved


Remove the two elements next to NaN value
The aim is to *remove the two elements next to NaN values* inside a vector. For example: x = [6 10 5 8 9 NaN 23 9 7 3 21 ...

10 years ago

Solved


Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
The given function returns the index of the maximum value in a given matrix. such as X=[4,3,4,5,9,12,0,5] Ans= 6 if maxim...

10 years ago

Solved


Back to basics 24 - Symbolic variables
Covering some basic topics I haven't seen elsewhere on Cody. Given a string algebraic expression, return the symbolic variabl...

10 years ago

Solved


Is the input divisible by 3?
Return true if the input is divisible by 3 and false if not.

10 years ago

Problem


Convert vector datasets to plot with imagesc instead of scatter
For large datasets this allows much faster plotting. An irregular 2D spatial sampling is provided in x and y vectors with a d...

10 years ago | 2 | 4 solvers

Solved


Convert vector datasets to plot with imagesc instead of scatter
For large datasets this allows much faster plotting. An irregular 2D spatial sampling is provided in x and y vectors with a d...

10 years ago

Solved


Generate a random matrix A of (1,-1)
Input n: is an positive integer which serves as the dimension of the matrix A; Output: A=(Aij),where each entry Aij is either...

10 years ago

Solved


Sum the entries of each column of a matrix which satisfy a logical condition.
Given a numeric matrix A and a logical array L of the same size as A, return a row vector S containing the columnwise sums of th...

10 years ago

Solved


Sum of first n terms of a harmonic progression
Given inputs a, d and n, return the sum of the first n terms of the harmonic progression a, a/(1+d), a/(1+2d), a/(1+3d),....

10 years ago

Solved


Sophie Germain prime
In number theory, a prime number p is a *Sophie Germain prime* if 2p + 1 is also prime. For example, 23 is a Sophie Germain prim...

10 years ago

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01 - Scalar variables
Create the following variables: <<http://samle.dk/STTBDP/Assignment1_1.png>>

10 years ago

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Fill a zeros matrix
The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...

10 years ago

Solved


Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Example: in = magic(5) in = 17 24 1 8 15 23 5 7 14 16 4 6 13 20 ...

10 years ago

Solved


Find number of days
The input is two date in string format (dd-mm-yyyy) find out the number of days between these two dates. Example: input: ...

10 years ago

Problem


Magic Concentric Circles
Consider 4 magic circle circles around a single number in the sequence 1:n where the sum along the diameters is always equal, an...

10 years ago | 1 | 14 solvers

Solved


Magic Concentric Circles
Consider 4 magic circle circles around a single number in the sequence 1:n where the sum along the diameters is always equal, an...

10 years ago

Problem


Consecutive Powers
Return 2 numbers and 2 powers such that their difference is 1 A 4 element row vector is expected: x where x(1)^x(2) - x(...

10 years ago | 1 | 89 solvers

Solved


Consecutive Powers
Return 2 numbers and 2 powers such that their difference is 1 A 4 element row vector is expected: x where x(1)^x(2) - x(...

10 years ago

Solved


Detect a number and replace with two NaN's
Write code which replaces the number 1 with two NaNs. Example X = [ 1 2 NaN 4 1 3 7 NaN 1 4 NaN 2] ...

10 years ago

Solved


Find matching parenthesis
One of the most indispensable things about a great text editor for programming is the ability to quickly jump between matching p...

10 years ago

Solved


Test if a Number is a Palindrome without using any String Operations
*Description* Given an integer _X_, determine if it is a palindrome number. That is, _X_ is equal to the _X_ with the digits ...

10 years ago

Solved


02 - Vector Variables 2
Make the following variable: <<http://samle.dk/STTBDP/Assignment1_2b.png>>

10 years ago

Solved


Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

10 years ago

Solved


Alternating sum
Given vector x, calculate the alternating sum y = x(1) - x(2) + x(3) - x(4) + ...

10 years ago

Solved


Find the hypotenuse
Given a and b (the two sides of a right-triangle), find c, the hypotenuse.

10 years ago

Solved


random picture with random colours
write a function which creates a random(x,y) matrix with random RGB colours for example create_pic(5,5) gives us a 3d matrix. ...

10 years ago

Solved


Better bullseye matrix
<http://www.mathworks.com/matlabcentral/cody/problems/18-bullseye-matrix Problem 18> asks to create a bullseye matrix like this:...

10 years ago

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