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# Narfi

### MathWorks

17 total contributions since 2012

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Looping through a 3D matrix
Damith, By including the indices in the variable names, you end up with a lot of places where you need to build up strings fo...

más de 5 años ago | 0

Freeing GPU memory associated with CUDA kernels
Jeremy, In that case, I am puzzled as to what is going on. I would recommend you contact technical support and try to give t...

alrededor de 7 años ago | 0

Using a templated CUDA kernel via MATLAB
Alex, Allow me to quote from the help for parallel.gpu.CUDAKernel and try to parse it for you. If you have suggestions for h...

alrededor de 7 años ago | 0

| accepted

Freeing GPU memory associated with CUDA kernels
Jeremy, How large is the PTX for the kernels you are loading via the CUDAKernel interface? The CUDAKernel object in MATL...

alrededor de 7 años ago | 0

How to run arrayfun with a GPU?
Inside arrayfun, one can only perform computations with scalars, so vector and matrix computations are not supported. In partic...

más de 7 años ago | 2

| accepted

Solved

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 ...

alrededor de 8 años ago

Solved

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 8 años ago

Solved

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

alrededor de 8 años ago

Solved

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 8 años ago

Solved

Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

alrededor de 8 años ago

Solved

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 8 años ago

Solved

Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

alrededor de 8 años ago

Solved

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 8 años ago

Solved

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 8 años ago

Solved

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...

alrededor de 8 años ago

Solved