# Andrew Dobrovolc

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**Content Feed**

Solved

Convert a Cell Array into an Array

Given a square cell array: x = {'01', '56'; '234', '789'}; return a single character array: y = '0123456789'

3 years ago

Solved

Given the variable x as your input, multiply it by four, then divide it by two. Then put the result in y.

If x = 5, y = 4*5/2 = 10

3 years ago

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Figurate number triangle

Check whether the input matrix is a figurate number triangle: <http://mathworld.wolfram.com/FigurateNumberTriangle.html>

3 years ago

Solved

Matrix rotation as per given angle

Given a user defined matrix and angle of rotation, rotate the elements of output matrix as clockwise or anti-clockwise. Angle wi...

3 years ago

Solved

Calculate some equation

Using given inputs x and z, make two outputs that are y1 = (xz)/(x/z)^2 + 14x^2 - 0.8z^2 y2 = x^z - z^x + (x/z)^2 - (z/x...

3 years ago

Solved

cross in array

Make a cross from "1" in odd size array. Other value from array should be equal to "0"; As input you get length of side of arra...

3 years ago

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Sum all integers from 1 to 2^x

Given a number x, your function must return the summation of all integers from 1 to 2^x.

3 years ago

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Remove the middle element from a vector

Remove the middle element of a vector? *Example:* [1,2,3] should return 2 [1,2,3,4] should return 2 [] should return...

3 years ago

Solved

Simulate one complete step in the Biham–Middleton–Levine traffic model

The <http://en.wikipedia.org/wiki/Biham%E2%80%93Middleton%E2%80%93Levine_traffic_model Biham–Middleton–Levine traffic model> is ...

3 years ago

Solved

Find the Final State of an Abelian Sandpile

Let us define an <http://nautil.us/issue/23/dominoes/the-amazing-autotuning-sandpile Abelian sand pile> as a matrix that is only...

3 years ago

Solved

Construct a "diagAdiag" matrix

Construct a matrix whose elements begin from 1 and end at n^2 with the order of arrangement as shown below: For: n = 4 ...

3 years ago

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Block average ignoring NaN values

Given a matrix, calculate the block average of each disjoint sub-matrix while ignoring *NaN* values. Assume that the size of the...

3 years ago

Solved

Block average

Given a matrix, calculate the block average of each disjoint sub-matrix of the same size. Assume that the size of the matrix alo...

3 years ago

Solved

Data Regularization

Provided is an m-by-n integer data matrix A whose elements are drawn arbitrarily from a set *S* = [1,2,3,...,S] for any large in...

3 years ago

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Cookie Cutters

Given a larger and smaller matrix, perform element-by-element multiplication on the smaller matrix and a sub-matrix of the large...

3 years ago

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Sort rows of a matrix

Sort rows of matrix A in an ascending order according to the last column Example input: A = [1 2 3;7 8 9;4 5 6]; Exam...

3 years ago

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Moving Product (Easy)

Given an input array A, write a function *movprod(A,k,dim)* to calculate the moving product over a sliding window of length *k* ...

3 years ago

Solved

Replace secondary diagonal elements of a square array

Replace all the secondary diagonal elements of the square array A with the number n Example: A = [1 2 3 4 5 6 ...

3 years ago

Solved

Crunch that matrix!

You are given an M x N matrix. Write a script that will compress this matrix into an M x (N/3) matrix, where each of the terms ...

3 years ago

Solved

Fill the Matrix - 2

Input is a column vector and n. n columns will be added to the left of the input column. The first value of the row is the me...

3 years ago

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Fill the matrix - 1

Input is a column vector and n. n columns will be added to the left of the input column. The first value of the row is the s...

3 years ago

Solved

Matrix to 3-Column Matrix

Consider a matrix *A* such as A = [1 2 3 3 4 5 6; 2 3 4 5 6 7 8]; Can you convert this matrix to a three-column ...

3 years ago

Solved

Vector to 3-Column Matrix

Consider a vector *A* such as A = [1 2 3 3 4 5 6] Can you convert this vector to a three-column matrix like this: ...

3 years ago

Solved

Cumulative minimum of an array

Find the cumulative minimum of an array without using the built-in function <http://www.mathworks.com/help/matlab/ref/cummin.htm...

3 years ago

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Maximum of each diagonal

The well-known <http://www.mathworks.com/help/matlab/ref/max.html max> function can operate along either the rows or the columns...

3 years ago

Solved

Divide elements by sum of elements

In this problem, I ask you to write a function which will divide the elements of each column by the sum of the elements of the s...

3 years ago

Solved

Minimum of each diagonal

The well-known <http://www.mathworks.com/help/matlab/ref/min.html min> function can operate along either the rows or the columns...

3 years ago

Solved

The 5th Root

Write a function to find the 5th root of a number. It sounds easy, but the typical functions are not allowed (see the test su...

3 years ago

Solved

Magnet and Iron

(Inspired from <http://www.mathworks.com/matlabcentral/cody/problems/112 Problem 112: Remove the air bubbles>) Iron (atomic n...

3 years ago