Bernardo Cardoso de Aquino Cruz

MathWorks

Last seen: 1 dag ago | Active since 2022

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Spherical Volume
Calculate the volume of a sphere.

3 maanden ago

Solved

Nilpotent matrix
Check if matrix A is <http://mathworks.com/ nilpotent>.

3 maanden ago

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sum of non-primes
The sum of the non-primes no larger than 10 is 1+4+6+8+9+10=38 Find the sum of all the positive non-prime integers that do no...

3 maanden ago

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Area of a Square
Given the length x of the side of a regular square, find the area of the square, A.

3 maanden ago

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Given a number N, find the smallest prime P>N
Given a number N, find the smallest prime P greater than N. For example: If N=10 then P=11. If N=13 then P=17.

3 maanden ago

Solved

area of an annulus
Given the diameter d of the inner circle of the annulus. Given length z of a chord of the outer circle of the annulus. This chor...

3 maanden ago

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Symmetry of vector
Determine whether the vector is symmetric or not (vector could be even or odd in length). For example: x = [1 2 3 3 2 1] is s...

3 maanden ago

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Remove entire row and column in the matrix containing the input values
Remove the entire row and column from the matrix containing specific values. The specified value can be a scalar or a vector. Fo...

meer dan 2 jaar ago

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subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

meer dan 2 jaar ago

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Create the Ulam spiral
Have you ever seen this wonderful spiral ? The Ulam Spiral is arranging prime numbers in a clockwise spiral starting in 0. Give...

ongeveer 3 jaar ago

Solved

Area of a regular hexagon
Given the length of a side of a regular hexagon, return its area rounded to two decimal places.

ongeveer 3 jaar ago

Solved

Is the Point in a Triangle?
Check whether a point or multiple points is/are in a triangle with three corners Points = [x, y]; Triangle = [x1, y1; x...

ongeveer 3 jaar ago

Solved

Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
If _p_ is the perimeter of a right angle triangle with integral length sides, { _a_, _b_, _c_ }, there are exactly three solutio...

ongeveer 3 jaar ago

Solved

Height of a right-angled triangle
Given numbers a, b and c, find the height of the right angled triangle with sides a and b and hypotenuse c, for the base c. If a...

ongeveer 3 jaar ago

Solved

Find the sides of an isosceles triangle when given its area and height from its base to apex
Find the sides of an isosceles triangle when given its area and the height from its base to apex. For example, with A=12 and ...

ongeveer 3 jaar ago

Solved

Calculate the area of a triangle between three points
Calculate the area of a triangle between three points: P1(X1,Y1) P2(X2,Y2) P3(X3,Y3) these three points are the vert...

ongeveer 3 jaar ago

Solved

Find my daddy long leg (No 's')
Given the ratio of the two legs (longer / shorter), and the hypotenuse length, find the value of the bigger leg.

ongeveer 3 jaar ago

Solved

Split a string into chunks of specified length
Given a string and a vector of integers, break the string into chunks whose lengths are given by the elements of the vector. Ex...

ongeveer 3 jaar ago

Solved

String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
<http://www.mathworks.com/help/matlab/characters-and-strings.html String array> and cell array are two types of containers for s...

ongeveer 3 jaar ago

Solved

Convert a numerical matrix into a cell array of strings
Given a numerical matrix, output a *cell array of string*. For example: if input = 1:3 output is {'1','2','3'} whic...

ongeveer 3 jaar ago

Solved

Create a cell array out of a struct
Create a cell array out of a (single) struct with the fieldname in the first column and the value in the second column: in: ...

ongeveer 3 jaar ago

Solved

Cell Counting: How Many Draws?
You are given a cell array containing information about a number of soccer games. Each cell contains one of the following: * ...

ongeveer 3 jaar ago

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'

ongeveer 3 jaar ago

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Can we make a triangle?
Given three positive number, check whether a triangle can be made with these sides length or not. remember that in a triangle su...

ongeveer 3 jaar ago

Solved

Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

ongeveer 3 jaar ago

Solved

Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

ongeveer 3 jaar ago

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Converts numbers into characters
Converts numbers into characters

ongeveer 3 jaar ago

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

ongeveer 3 jaar 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.

ongeveer 3 jaar ago

Solved

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

ongeveer 3 jaar ago