Alex Feinman
MathWorks
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I'm a Senior UX Specialist here at MathWorks, supporting the MATLAB Language teams. This means any coding I do is strictly amateur stuff, and my comments should NOT be considered the "voice of the MathWorks".
In a past life, I got a doctorate analyzing how people talk and work together via computers, and have worked on planning- and AI-related projects for various government sponsors.
Professional Interests: Programming language design and environments; ethnographic analysis; data visualization; NLP; audio processing; image processing.
Hobbies: writing science fiction; role-playing; wargaming; music.
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"Cody" * 5 == "CodyCodyCodyCodyCody"
*Alice*: What? *"Cody" * 5 == "CodyCodyCodyCodyCody"*? You've gotta be kidding me! *Bob*: No, I am serious! Python supports...
circa 8 anni fa
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Number of Even Elements in Fibonacci Sequence
Find how many even fibonacci numbers are available in the first d numbers. Consider the following first 14 numbers 1 1 2...
circa 8 anni fa
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adding huge numbers
Write function called huge_add that adds together two positive integers of any length specified as char vectors using decimal n...
quasi 9 anni fa
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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...
quasi 9 anni fa
Problema
Create a recurrence matrix for a vector of data
In <https://en.wikipedia.org/wiki/Conversation_analysis conversation analysis>, it's often useful to track the contributions fro...
circa 13 anni fa | 2 | 23 risolutori
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Create a recurrence matrix for a vector of data
In <https://en.wikipedia.org/wiki/Conversation_analysis conversation analysis>, it's often useful to track the contributions fro...
circa 13 anni fa
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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...
circa 13 anni fa
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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 ...
circa 13 anni fa
Domanda
Shifting a multidimensional matrix
I'm trying to offset a matrix by a certain distance, like dragging an image partially out of frame. The 'new' area gets fill...
circa 13 anni fa | 4 risposte | 0
4
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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.
oltre 13 anni fa
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How many monitors are connected ?
How to obtain the numbers of monitors connected to your computer ?
oltre 13 anni fa
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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".
oltre 13 anni fa
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Functional inputs
Return an n-dimensional array whose elements are the results of a function over a set of vectors. The (i,j,k, ...n)th element...
oltre 13 anni fa
Problema
Functional inputs
Return an n-dimensional array whose elements are the results of a function over a set of vectors. The (i,j,k, ...n)th element...
oltre 13 anni fa | 1 | 18 risolutori
Problema
"Look and say" sequence
What's the next number in this sequence? * [0] * [1 0] * [1 1 1 0] * [3 1 1 0] * [1 3 2 1 1 0] This a variant on the w...
oltre 13 anni fa | 3 | 231 risolutori
Domanda
How can I show a time/date stamp in the prompt?
I am recording (using diary) some work in MATLAB and I want to see when each command was executed. Is there a way to change the ...
quasi 14 anni fa | 1 risposta | 0
1
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Is my wife right? Now with even more wrong husband
Again, as in "Is my wife right?" ( <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right> ), answer 'yes' r...
quasi 14 anni fa
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The Goldbach Conjecture
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...
quasi 14 anni fa
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Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...
quasi 14 anni fa
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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...
quasi 14 anni fa
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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...
quasi 14 anni fa
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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.
quasi 14 anni fa
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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...
quasi 14 anni fa
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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 ...
quasi 14 anni fa
Problema
Construct a string from letters and counts
Given two input arrays like this: [5,3,1] ['a','b','c'] Output a string that contains each letter the specified num...
quasi 14 anni fa | 1 | 146 risolutori
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Pangrams!
A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Example: Input s ...
quasi 14 anni fa
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Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...
quasi 14 anni fa
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Construct a string from letters and counts
Given two input arrays like this: [5,3,1] ['a','b','c'] Output a string that contains each letter the specified num...
quasi 14 anni fa
