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Rotate a Matrix
Input a Matrix x, Output y is the matrix rotating x 90 degrees clockwise

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Create a Matrix of Zeros
Given an input x, create a square matrix y of zeros with x rows and x columns.

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Matlab Basics - Absolute Value
Write a script that returns the absolute value of the elements in x e.g. x = [-1 -2 -3 -4] --> y = [1 2 3 4]

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Squaring Matrix
Square the following matrix using matlab % A = 1 2 3 4 5 6 7 8 So new matrix should display...

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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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Min of a Matrix
Return the minimum value in the given matrix.

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Determine the square root
Determine the square root of the value the user has entered, n.

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length of a vector
Find twice the length of a given vector.

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Sum of Two Numbers
Given two integer numbers x and y, calculate their sum and put it in z. Examples: Inputs x = 2, y = 4 Output z is 6 ...

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Who is the smartest MATLAB programmer?
Who is the smartest MATLAB programmer? Examples: Input x = 'Is it Obama?' Output = 'Me!' Input x = 'Who ?' Ou...

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Arrange vector in ascending order
Arrange a given vector in ascending order. input = [4 5 1 2 9]; output = [1 2 4 5 9];

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

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Create an index-powered vector
Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...

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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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Area of a Square
Inside a square is a circle with radius r. What is the area of the square?

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Square a Number
Given an input x, return y, which is equal to the square of x.

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Simple equation: Annual salary
Given an hourly wage, compute an annual salary

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Discussion

Image format for problem group cover in Cody ?
Hey cody fellows :-) ! I recently created two problem groups, but as you can see I struggle to set their cover images : Prim...

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Discussion

Gif animations with Matlab
I just wanted here to share a link to some .gif animations I created over the years with Matlab :-) Wikimedia : uploads by Ni...

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Determine if a Given Number is a Triangle Number
*Description:* Determine if the elements of an input array are triangle numbers and return the result as an array with the sa...

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List composite numbers that cannot be written as the sum of two primes

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Return 'on' or 'off'
When the input is true, return 'on', otherwise, return 'off'.

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square root
Find the square root (y) of an input (x).

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Replace Nonzero Numbers with 1
Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

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Check if inputted variable is a string or a number
Check if a inputted variable is a number or a string, given a string input (i.e. '1' is 1 and thus a number, 'a' is a string).

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imaginary results
Return the value of the imaginary number i to the power of input argument n.

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modulus of a number
find the modulus of a given number

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Create tangent function out of sin and cos
Please don't use tan(x) directly

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Output a vector which is table of 9
Output a vector which is table of 9

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Set some matrix elements to zero
First get the maximum of each *row*, and afterwards set all the other elements to zero. For example, this matrix: 1 2 3 ...

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