# Diogo Carvalho

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Solved

Double Factorial

Return double factorial n(n-2)...(5)(3)(1), n>0, odd n!! = n(n-2)...(6)(4)(2), n>0, even 1 ...

11 månader ago

Solved

Remove any row in which a NaN appears

Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

11 månader ago

Solved

letter yes yes & letter no no

Split a string into two strings, wherein the first string has all alphabetic letters and the second string has all the remaining...

11 månader ago

Solved

Sum of series VI

What is the sum of the following sequence: Σk⋅k! for k=1...n for different n?

12 månader ago

Solved

Sum of series V

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

12 månader ago

Solved

Sum of series IV

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

12 månader 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?

12 månader 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?

12 månader ago

Solved

Stress-Strain Properties - 3

A brittle material will not exhibit a yield point. In other words, the yield point and failure point coincide. In such cases, th...

12 månader ago

Solved

Stress-Strain Properties - 1

This is the first in a series of problems regarding mechanics of materials, in particular, material properties drawn from stress...

12 månader ago

Solved

Vector creation

Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

mer än ett år ago

Solved

Doubling elements in a vector

Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

mer än ett år ago

Solved

Flip the vector from right to left

Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

mer än ett år ago

Solved

Whether the input is vector?

Given the input x, return 1 if x is vector or else 0.

mer än ett år ago

Solved

Get the length of a given vector

Given a vector x, the output y should equal the length of x.

mer än ett år ago

Solved

Create times-tables

At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

ungefär 2 år ago

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

ungefär 2 år ago

Solved

Sudoku square

We have a small Sudoku square, but one number is missing. x = [ 1 5 4 8 6 3 0 9 7 ] Make a function, wher...

mer än 2 år ago

Solved

Check to see if a Sudoku Puzzle is Solved

*Description:* Your task, should you choose to accept it, is to make a function that checks to see if a 9x9 matrix of integer...

mer än 2 år ago

Solved

Solve the Sudoku Row

*Description* A simple yet tedious task occurs near the end of most Sudoku-solving algorithms, computerized or manual. The ta...

mer än 2 år 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 ...

mer än 2 år ago

Solved

Is this triangle right-angled?

Given three positive numbers a, b, c, where c is the largest number, return *true* if the triangle with sides a, b and c is righ...

mer än 2 år ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

mer än 2 år ago

Solved

Replace Nonzero Numbers with 1

Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

mer än 2 år ago

Solved

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.

mer än 2 år ago

Solved

Write a function man that takes a row vector v and returns a matrix H as follows..

Write a function called man that takes a row vector v as an input and returns a matrix H whose first column consist of the eleme...

mer än 2 år ago