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# Brian

### University of Illinois at Chicago

Active since 2011

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Problem

Vector indexing: lower than mean
Find all values in a vector lower than the mean of the vector

alrededor de 4 años ago | 1 | 69 solvers

Problem

Resizing Matrices
Take an 4x3 matrix, and resize it to a 2x6 matrix

alrededor de 4 años ago | 0 | 77 solvers

Problem

Matrix Ax=B problem
Take a incoming A and B vector, and solve for x

alrededor de 4 años ago | 1 | 70 solvers

Problem

Matrix element wise multiplication
Take two incoming vectors, and multiply them element wise

alrededor de 4 años ago | 0 | 75 solvers

Problem

Matrix multiplication
Multiply two incoming matrices via matrix multiplication

alrededor de 4 años ago | 0 | 104 solvers

Problem

Sum two matrices
Take two incoming matrices, and sum them

alrededor de 4 años ago | 1 | 94 solvers

Problem

Find the index of the lowest number in a matrix
Take a matrix, and find the [row cal] index of the lowest number

alrededor de 4 años ago | 0 | 60 solvers

Problem

Replace 0 indices in array with 1's
Take a incoming vector, and replace 0's with ones

alrededor de 4 años ago | 0 | 67 solvers

Problem

Matrix Max Finder
Output the maximum value in a matrix

alrededor de 4 años ago | 1 | 77 solvers

Solved

Calculate the centroid of a triangle
Info: https://en.wikipedia.org/wiki/Centroid Example Input: x = [0 0 1]; % x-coordinate y = [0 1 0]; % y-coordinat...

alrededor de 4 años ago

Problem

Find the sum of the largest two elements in a vector
With this one, you have to find the two largest elements in a vector and output the sum of those numbers.

alrededor de 4 años ago | 0 | 71 solvers

Problem

Check if inputted variable is a string or a number
Check if a inputted variable is a number or a string, given a string input (i.e. '1' is 1 and thus a number, 'a' is a string).

alrededor de 4 años ago | 0 | 57 solvers

Problem

Find the mean of two vectors
Take two vectors, and output the mean of them (bonus if you don't use the in-built mean function)

alrededor de 4 años ago | 0 | 72 solvers

Problem

Matrix Generation from Vector Multiplication
Output the matrix generated from multiplying two vectors together

alrededor de 4 años ago | 0 | 60 solvers

Problem

Vector Element Multiplication
Take two incoming vectors, and output the element wise multiplication of the vectors.

alrededor de 4 años ago | 2 | 73 solvers

Problem

Take two incoming vectors and output the sum of the two vectors

alrededor de 4 años ago | 2 | 87 solvers

Problem

Automatic String Editing
In this function, you will take an incoming string, and output the same string with each character one letter later in the alpha...

alrededor de 4 años ago | 1 | 44 solvers

Problem

String Delimination and Outputting
In this problem, take an incoming string and deliminate the string based on spaces. Output the first string in between the space...

alrededor de 4 años ago | 1 | 44 solvers

Problem

More Simple String Concatenation
Take the first string input, reverse the order of the string from the end to beginning (i.e. apple becomes elppa), add a space a...

alrededor de 4 años ago | 0 | 48 solvers

Problem

Simple String Concatenation
This is a simple problem involving taking two incoming strings, and outputting the concatenated string with a space separating t...

alrededor de 4 años ago | 1 | 55 solvers

Solved

Area of an equilateral triangle
Calculate the area of an equilateral triangle of side x. <<http://upload.wikimedia.org/wikipedia/commons/e/e0/Equilateral-tr...

alrededor de 4 años ago

Solved

Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

alrededor de 4 años ago

Solved

Roll the Dice!
*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

alrededor de 4 años ago

Solved

Bottles of beer
Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

alrededor de 4 años ago

Solved

Too mean-spirited
Find the mean of each consecutive pair of numbers in the input row vector. For example, x=[1 2 3] ----> y = [1.5 2.5] x=[1...

alrededor de 4 años ago

Solved

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 = ...

alrededor de 4 años ago

Solved

You just measured its surface area, that is the input.

alrededor de 4 años ago

Solved

Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

alrededor de 4 años ago

Solved

How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

alrededor de 4 años ago

Solved

The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

alrededor de 4 años ago