Brian Moore

Voxel51

Last seen: fast 5 Jahre vor | Aktiv seit 2012

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Co-Founder and CTO at Voxel51
PhD in EECS from Michigan

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PCA and ICA Package
Implements Principal Component Analysis (PCA) and Independent Component Analysis (ICA)

fast 7 Jahre vor | 163 Downloads |

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Minefield Sonar
*Background* In mine-hunting games (e.g. Microsoft Minesweeper), the user is provided with a covered grid that, upon a left c...

fast 10 Jahre vor

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Hackathon: the beginnings
I am thinking of a number between 1 and 10000... can you guess what this number is? *Description* The test suite has rando...

fast 10 Jahre vor

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Happy 2013...
Happy 2013, everyone! An interesting tidbit about 2013 is that it is the first year since 1987 to contain four different digits...

fast 10 Jahre vor

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Elapsed time is -0.005204 seconds.
Write a function that takes less than zero seconds to execute, as measured using tic and toc. For repeatability, the test case p...

fast 10 Jahre vor

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Return the 'Size' of a String of Code
One of the most 'mysterious' parts of playing Cody is the sizing system. Given a string of commands, return the size that Cody w...

fast 10 Jahre vor

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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...

fast 10 Jahre vor

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Binary numbers
Given a positive, scalar integer n, create a (2^n)-by-n double-precision matrix containing the binary numbers from 0 through 2^n...

fast 10 Jahre vor

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Target sorting
Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...

fast 10 Jahre vor

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Balanced number
Given a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

fast 10 Jahre vor

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What is the next step in Conway's Life?
Given a matrix A that represents the state of <http://en.wikipedia.org/wiki/Conway's_Game_of_Life Conway's game of Life> at one ...

etwa 10 Jahre vor

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Remove the air bubbles
Given a matrix a, return a matrix b in which all the zeros have "bubbled" to the top. That is, any zeros in a given column shoul...

etwa 10 Jahre vor

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Count from 0 to N^M in base N.
Return an array of numbers which (effectively) count from 0 to N^M-1 in base N. The result should be returned in a matrix, with ...

etwa 10 Jahre vor

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Narcissistic problem
How many likes has this problem?

etwa 10 Jahre vor

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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...

etwa 10 Jahre vor

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Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

etwa 10 Jahre vor

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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...

etwa 10 Jahre vor

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Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

etwa 10 Jahre vor

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Multiply 2 numbers
Very easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, pro...

etwa 10 Jahre vor

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Return a list sorted by number of occurrences
Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x. Ties are resolved by a ...

etwa 10 Jahre vor

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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...

etwa 10 Jahre vor

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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...

etwa 10 Jahre vor

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

etwa 10 Jahre vor

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Implement a counter
Write a function that returns a function that counts the number of times it is invoked. Example: >> h = counter; >> h() ...

etwa 10 Jahre vor

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Kaprekar Steps
6174 is the <http://en.wikipedia.org/wiki/6174_%28number%29 Kaprekar constant>. All natural numbers less than 10,000 (except som...

etwa 10 Jahre vor

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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...

etwa 10 Jahre vor

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Say something funny
Say something funny, or not. Your solution will be (fully automatically and objectively) scored based on how clever or funny ...

etwa 10 Jahre vor

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Subset Sum
Given a vector v of integers and an integer n, return the the indices of v (as a row vector in ascending order) that sum to n. I...

etwa 10 Jahre vor

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Return the Nth Output from an Input Command
*Description* Given _F_, a cell array whose first element is a function handle and subsequent elements are arguments, return ...

etwa 10 Jahre vor

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Find a subset that divides the vector into equal halves
Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...

etwa 10 Jahre vor

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Brian Moore

Voxel51

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