Stuart McGarrity

MathWorks

Last seen: 3 días hace | Con actividad desde 2005

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I'm from a small town called Largs near Glasgow in Scotland. I studied for my undergraduate degree in Electronic and Microprocessor Engineering and PhD in Signal Processing at Strathclyde University. I live in Natick, MA.

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Calculate the mean of each half of a matrix
Given a matrix with an even number of columns, n, return a 1-by-2 row vector where the first element is the mean of all the elem...

2 meses hace

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Find Closest Constant
Given a number x, return the value that is closest to x from this list of constants: 0, 1, , e, , (also known as ). For exampl...

2 meses hace

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Matrix Quadrants
Write a function that takes N as the input, and outputs a matrix whose upper-left (NxN) quadrant contains all ones, the lower-ri...

2 meses hace

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Find relatively common elements in matrix rows
You want to find all elements that exist in greater than 50% of the rows in the matrix. For example, given A = 1 2 3 5 ...

casi 4 años hace

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

alrededor de 4 años hace

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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.

alrededor de 4 años hace

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Get the area codes from a list of phone numbers
Given a string of text with phone numbers in it, return a unique'd cell array of strings that are the area codes. s = '508-647...

alrededor de 4 años hace

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I Plead the Fifth
Write a function to provide a yes or no answer to the input string. However, it must plead the 5th amendment (return an empty st...

alrededor de 4 años hace

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

alrededor de 4 años hace

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Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

alrededor de 4 años hace

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Find the index of n in magic(n)
If input n=5, then magic(n) is 17 24 1 8 15 23 5 7 14 16 4 6 13 20 22...

alrededor de 4 años hace

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Create an index-powered vector
Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...

alrededor de 4 años hace

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

alrededor de 4 años hace

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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 hace

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Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

alrededor de 4 años hace

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Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

alrededor de 4 años hace

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Make a random, non-repeating vector.
This is a basic MATLAB operation. It is for instructional purposes. --- If you want to get a random permutation of integer...

alrededor de 4 años hace

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Word Counting and Indexing
You are given a list of strings, each being a list of words divided by spaces. Break the strings into words, then return a maste...

alrededor de 4 años hace

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Add two numbers
Given a and b, return the sum a+b in c.

alrededor de 4 años hace

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MATLAB Counter
Write a function f = counter(x0,b) to construct a counter handle f that counts with an initial value x0 and a step size b. E...

alrededor de 4 años hace

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Binary Coder
Take an input number and print the binary value of this number.

alrededor de 4 años hace

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Fix the last element of a cell array
Note: this is lifted directly from <http://www.mathworks.com/matlabcentral/answers/82825-puzzler-for-a-monday Puzzler for a Mond...

alrededor de 4 años hace

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Cell joiner
You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...

alrededor de 4 años hace

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Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

alrededor de 4 años hace

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Join Strings with Multiple Different Delimiters
The idea is to form the string S by interleaving the elements of a cell array of strings DELIMITER and another cell array of st...

alrededor de 5 años hace

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Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

más de 7 años hace

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Use a timetable to analyze a train timetable (Part 4)
You are analyzing a train timetable (you have some time to kill since you just missed your train!) What is the average daily tri...

más de 8 años hace

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Use a timetable to analyze a train timetable (Part 3)
Oh no, you missed your train to Boston (again?)! How many times can you miss that train today? (In other words, how many Boston ...

más de 8 años hace

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

más de 8 años hace

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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]; and ...

más de 8 años hace

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