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Multiply a column by a row
* Given a column vector C and and a row vector R. * Output a matrix M. * Every column of M equals to C multiplied by correspon...

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Remove All elements less than 5
Given an input vector x, remove all elements of x less than 5 . Example: Input x = [ 1 2 5 7 3 ] Output y is [ 5 7 ...

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ascii value
let input='a' output=97

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MATCH THE STRINGS (2 CHAR) very easy
Match the given string based on first two characters on each string. For example A='harsa'; b='harish'; result '1' ...

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How to calculate log?
There is a log that have base 5. How to calculate? log5(x)?

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y equals x divided by 2
function y = x/2

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Check if a number belongs in the fibonacci squence
Test if integer i is a number in the fibonacci sequence. Return true if it is.

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vector to string
Determine what the ASCII characters spell out. Example: input = [ 72 73 71 72] output = 'HIGH'

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Return median of a matrix
Compute median of a matrix of any dimension. Exclude the NaNs if any.

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Will there be a new leader?
Simply answer the title.

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Delete 2nd and 5th column of Given 6*6 matrix
Delete the 2nd and 5th columns of the given 6*6 matrix. Example Suppose A = magic(6) 35 1 6 26 19 ...

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Write a string
The answer should be a string that is the value: "I like apples!" (Ignore the quotation marks, just write what is inside the ...

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Reverse a matrix
Its simple. You have to reverse a given matrix.

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03 - Matrix Variables 6
Make _fMat_ be a 5x3 matrix of random integers with values from -3 to 3 (Hint: use *randi*)

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surface of a spherical planet
you just discovered its circumference, that is the input.

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Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...

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sum all digits
input = 123456789, output = 1+2+3+4+5+6+7+8+9 = 45

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If you have matrix A, create matrix B using matrix A as an "element"
A = [1 2 3 4; 5 6 7 8] B = [1 2 3 4 1 2 3 4; 5 6 ...

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Matlab Basics II - Create a vector with a repeated entry
Create a row vector of length n, filled with 4's, for example, if n = 3 output = [4 4 4] make sure to round UP when n is a...

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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...

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Find out value of sine given by degree.
Find out value of sine given by degree. If theta=30, it's value must be 0.5.

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Feeling lucky?
Guess which number Cody is thinking (1 to 10)? (This is a game of luck more than skill. Good luck!)

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Test Problem; Create a 5x5 array containing all ones
This is a test for learning the process of creating a Cody problem. The goal of this test problem will be to create an array,...

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Back to basics 11 - Max Integer
Covering some basic topics I haven't seen elsewhere on Cody. Return the largest positive integer MATLAB can handle.

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Generate a NaN...on purpose
The goal is to create a function that will return a single "NaN" without using the nan function. I am interested to see how many...

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Where is she?
Given the numbers 12, 3, 6, 9 Tell where the girl is located. That is: Look to your 3 o'clock = look right Example ...

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Find the area of a rectangle if length of the diagonal is given.
if length of a diagnonal in rectangle is 5. Its area is 12.

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Toolbox check part 3
In my ongoing quest to highlight obscure parts of MATLAB, the latest challenge is to take 2 string inputs, one a MATLAB toolbox ...

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Calculate Reynolds Number
Write a MATLAB function that calculates the Reynolds number for flow over a flat plate: ρ = fluid density (kg/m³) V = veloc...

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Spherical Volume
Calculate the volume of a sphere.

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