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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,...

3 years ago

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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...

3 years ago

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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 = ...

3 years ago

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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]; ...

3 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]

3 years ago

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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...

3 years ago

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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 ...

3 years ago

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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...

3 years ago

Problem

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...

3 years ago | 0 | 43 solvers

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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

3 years ago

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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?

3 years ago

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

3 years ago

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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?

3 years ago

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

3 years ago

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

3 years ago

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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...

3 years ago

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

3 years ago

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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?

3 years ago

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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.

3 years ago

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

3 years ago

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

3 years ago

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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?

3 years ago

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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...

3 years ago

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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.

3 years ago

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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...

3 years ago

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

3 years ago

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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...

3 years ago

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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...

3 years ago

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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...

3 years ago

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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...

3 years ago