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Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

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Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; ...

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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]

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displayed ...

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Sum the two halves of an array with an even number of elements
given an array of an even number of elements, sum the front and back half of the array and return the sums as an array For exam...

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Problema

Sum the two halves of an array with an even number of elements
given an array of an even number of elements, sum the front and back half of the array and return the sums as an array For exam...

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Resuelto

Compute a dot product of two vectors x and y
x and y are input vectors, d is a number and contains their dot product

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Sum of series V
What is the sum of the following sequence: Σk(k+1) for k=1...n for different n?

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Double all elements in the array
Duplicate all elements in the array

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Sum of series III
What is the sum of the following sequence: Σ(2k-1)^3 for k=1...n for different n?

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Find the max element of the array
Find the max element of the array

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Divide by 4
Given the variable x as your input, divide it by four and put the result in y.

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Back to basics 6 - Column Vector
Covering some basic topics I haven't seen elsewhere on Cody. Given an input vector, output true or false whether it is a colu...

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the average value of the elements
Calculate the average value of the elements in the array

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Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?

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Find the sum of the elements in the "second" diagonal
Find the sum of the elements in the diagonal that starts at the top-right corner and ends at the bottom-left corner.

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calculate the length of matrix
input 1 array, calculate the length

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Convert radians to degrees
Given input in radians, output to degrees

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Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

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Right and wrong
Given a vector of lengths [a b c], determines whether a triangle with those sides lengths is a right triangle: <http://en.wikipe...

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Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

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Calculate area of sector
A=function(r,seta) r is radius of sector, seta is angle of sector, and A is its area. Area of sector A is defined as 0.5*(r^2...

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Add two numbers
Calculate the sum of two numbers. Example input = [2 3] output = 5

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Energy of a photon
&#9883 &#9762 &#9883 &#9762 &#9883 &#9762 &#9883 Given the frequency F of a photon in giga hertz. Find energy E of this photon...

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Find the largest value in the 3D matrix
Given a 3D matrix A, find the largest value. Example >> A = 1:9; >> A = reshape(A,[3 1 3]); >> islargest(A) a...

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Subset Sum
Given a vector v of integers and an integer n, return the the indices of v (as a row vector in ascending order) that sum to n. I...

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Counting Sequence
Given a vector x, find the "counting sequence" y. A counting sequence is formed by "counting" the entries in a given sequence...

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