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Pierre


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Con actividad desde 2011

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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...

alrededor de 11 años hace

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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...

alrededor de 11 años hace

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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...

alrededor de 11 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...

alrededor de 11 años hace

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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...

alrededor de 11 años hace

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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

alrededor de 11 años hace

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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 ...

alrededor de 11 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 11 años hace

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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...

alrededor de 11 años hace

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

alrededor de 11 años hace

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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.

más de 11 años hace

Respondida
How to find out the radius and center of unknown circle and reconstruct the circle with calculated radius.
You should have a look at the Hough transform in its general form and its application to circles in particular. It allows to det...

casi 12 años hace | 0

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Duplicate each element of a vector.
for an n-dimensional vector x, the function should return another vector 2n-dimension which each element is repeated twice. Ex...

casi 12 años hace

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Set the array elements whose value is 13 to 0
Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...

casi 12 años hace

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Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

casi 12 años hace

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Number of Horns on a unicorn!
Calculate the number of horns on a *unicorn*! And I'm talking about a unicorn with not more than one horn on it!

casi 12 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 12 años hace

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

más de 12 años hace

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

más de 12 años hace

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

más de 12 años hace

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Is my wife right?
Regardless of input, output the string 'yes'.

más de 12 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 ...

más de 12 años hace

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

más de 12 años hace

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

más de 12 años hace

Respondida
[DEPRECATED] What frustrates you about MATLAB?
# I'd really appreciate improved MEX-debugging capabilities on Linux systems in regard to the user: Seriously, we're still using...

casi 13 años hace | 2

Respondida
using matlab engine from c++: How to convert a int** into mxArray*
I didn't really get your posted code as it requires some guessing, but let me point out a few things: 1. While you might be u...

casi 13 años hace | 0

Respondida
Convert C struct to matlab struct
I never did that in particular, but I personally consider there are three approaches: 1. Receive the byte-stream as is, but t...

casi 13 años hace | 0

Respondida
Incorrect "Creating an instance of the Abstract class is not allowed"
|query_dev| inherits the abstract methods methods (Abstract) S = assembleStatement(obj); submitStatement(obj); ...

casi 13 años hace | 1

| aceptada

Respondida
Finding the second smallest value in each column of an array?
You could simply take advantage of Bruno Luong's <http://www.mathworks.com/matlabcentral/fileexchange/23576-minmax-selection Min...

casi 13 años hace | 1

Respondida
dilatasi erosi ..... what it is?
See <http://en.wikipedia.org/wiki/Mathematical_morphology mathematical morphology> on Wiki.

casi 13 años hace | 0

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