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Find the longest sequence of 1's in a binary sequence.

Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

plus de 3 ans ago

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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...

plus de 3 ans ago

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Remove all the consonants

Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

plus de 3 ans ago

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Fibonacci sequence

Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

plus de 3 ans ago

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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...

plus de 3 ans ago

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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...

plus de 3 ans ago

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Who Has the Most Change?

You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

plus de 3 ans ago

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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. Examp...

plus de 3 ans ago

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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...

plus de 3 ans ago

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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 ...

plus de 3 ans ago

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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...

plus de 3 ans ago

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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 ...

plus de 3 ans ago

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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...

plus de 3 ans ago

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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.

plus de 3 ans ago

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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 ...

plus de 3 ans ago

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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...

plus de 3 ans ago

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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:...

plus de 3 ans ago

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Can any body tell me how to implement KSVD in matlab?

Here is a function which implements the K-SVD algorithm. function mD = DL_KSVD(mInitD, mX, cardinality) mD ...

Can any body tell me how to implement KSVD in matlab?

Here is a function which implements the K-SVD algorithm. function mD = DL_KSVD(mInitD, mX, cardinality) mD ...

plus de 4 ans ago | 0

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Linear Least Squares With 2 Inequality Constraints

I created a solution. It can be found here: http://math.stackexchange.com/a/1403593/33

Linear Least Squares With 2 Inequality Constraints

I created a solution. It can be found here: http://math.stackexchange.com/a/1403593/33

presque 5 ans ago | 0

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Question

Linear Least Squares With 2 Inequality Constraints

Hello, I would like to know how can I solve the following Linear Least Squares problem: arg min(x) (Ax - b)'(Ax - b) s....

presque 5 ans ago | 2 answers | 0

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Fast Anisotropic Curvature Preserving Smoothing

Fast Anisotropic Curvature Preserving Smoothing for High Quality Image Denoising

presque 5 ans ago | 3 downloads |

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Computing Mahalanobis Distance Between Set of Points and Set of Reference Points

Here is the solution fully vectorized (Though uses much more multiplications than needed): mA = reshape(bsxfun(@minus, perm...

Computing Mahalanobis Distance Between Set of Points and Set of Reference Points

Here is the solution fully vectorized (Though uses much more multiplications than needed): mA = reshape(bsxfun(@minus, perm...

presque 5 ans ago | 0

| accepted

Question

Computing Mahalanobis Distance Between Set of Points and Set of Reference Points

Hello, I have an n x p matrix - mX which is composed of n points in R^p. I have another m x p matrix - mY which is compo...

presque 5 ans ago | 2 answers | 0

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Backslash for solving very big sparse matrix in Ax=b

If you're memory limited the best solution I know of is <https://en.wikipedia.org/wiki/Conjugate_gradient_method Conjugate Gradi...

Backslash for solving very big sparse matrix in Ax=b

If you're memory limited the best solution I know of is <https://en.wikipedia.org/wiki/Conjugate_gradient_method Conjugate Gradi...

presque 5 ans ago | 0

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Weighted k means clustering

Usually the weighting would be using <https://en.wikipedia.org/wiki/Mahalanobis_distance Mahalanobis Distance> Matrix. If I'm...

Weighted k means clustering

Usually the weighting would be using <https://en.wikipedia.org/wiki/Mahalanobis_distance Mahalanobis Distance> Matrix. If I'm...

presque 5 ans ago | 0

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Reshape Video Matrix Into Long RGB Matrix and Back

I think I have a solution (At least one). going from video into one lone image: function [ mOutputImage ] = ReshapeVideo...

Reshape Video Matrix Into Long RGB Matrix and Back

I think I have a solution (At least one). going from video into one lone image: function [ mOutputImage ] = ReshapeVideo...

environ 5 ans ago | 0

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Question

Reshape Video Matrix Into Long RGB Matrix and Back

Hello, Let's say I have a Video Matrix `mVideoMatrix`. This is a 4D matrix (Numnber of Rows x Number of Columns x Number o...

environ 5 ans ago | 3 answers | 0

Answered

Create a LUT Table by Euclidean Distance

Ok, I created something using the ' <http://www.mathworks.com/matlabcentral/fileexchange/10064-allcomb allcomb> ' function from...

Create a LUT Table by Euclidean Distance

Ok, I created something using the ' <http://www.mathworks.com/matlabcentral/fileexchange/10064-allcomb allcomb> ' function from...

environ 5 ans ago | 0

| accepted

Question

Create a LUT Table by Euclidean Distance

Hello, I have a list of N vectors in 3D space (Points in RGB color space). We'll call that our Dictionary. The whole data ...

environ 5 ans ago | 1 answer | 0