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Solved
Y=X
Given an input variable x, output a variable y that is equal in value to x. Example: Input x = 1 Output y is 1 Inp...
3 years ago
Solved
Back to basics 8 - Matrix Diagonals
Covering some basic topics I haven't seen elsewhere on Cody. Given an input vector of numbers, output a square array with the...
3 years ago
Solved
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 ...
3 years ago
Solved
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
Solved
Perimeter of a semicircle
Given the diameter d, find the perimeter of a semicircle
3 years ago
Solved
surface of a spherical planet
you just discovered its circumference, that is the input.
3 years ago
Solved
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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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.
3 years ago
Solved
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
Solved
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
Solved
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
Solved
the average value of the elements
Calculate the average value of the elements in the array
3 years ago
Solved
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
Solved
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
Solved
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
Solved
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
Solved
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
Solved
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
Solved
Divide by 4
Given the variable x as your input, divide it by four and put the result in y.
3 years ago
Solved
Add two numbers
Calculate the sum of two numbers. Example input = [2 3] output = 5
3 years ago
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Back to basics 21 - Matrix replicating
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...
3 years ago
Solved
What's size of TV?
Many people buy TV. Usually they ask about diagonal. But also important are width and height. Let's assume that all TV have rati...
3 years ago
Solved
Energy of a photon
⚛ ☢ ⚛ ☢ ⚛ ☢ ⚛ Given the frequency F of a photon in giga hertz. Find energy E of this photon...
3 years ago
Solved
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
Solved
Sorted highest to lowest?
Return 1 if the input is sorted from highest to lowest, 0 if not. Example: 1:7 -> 0 [7 5 2] -> 1
3 years ago
