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Calculate roots of polynomial given as vector array.
Calculate roots of polynomial given as vector array. Example x=[1 2 0 5 0 3] result=[-2.7267 ; ...

10 years ago

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Find scalar product of two polynomials a and b, given as vector array.
Find scalar product of two polynomials given as vector array. Example a=[1 -1 2]; b=[2 4 1]; result=0

10 years ago

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Return amount of palindromes in the string.
Example Input: s='eye story pop dictionary noon enjoy software moon' Output: amount=3

10 years ago

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Counting candies
In a classroom of |'n'| children, every even numbered child gets one big candy and every odd numbered child gets two small candi...

10 years ago

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Find Euclidean norm of given vector u.
Find Euclidean norm of given vector u. https://en.wikipedia.org/wiki/Euclidean_distance Example x=[1 1] result=sqrt(1^2+1^2...

10 years ago

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Find cosine between two given vectors u and v.
Find cosine between two given vectors u and v. Example u = [5 2 0 5 3 0]; v = [3 2 5 1 ...

10 years ago

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Numerate input arguments
For every input, output the number. Example: [a, b] = Test('first', 'second') a=1; b=2;

10 years ago

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Calculate the eigenvalues of A.
Calculate the sum of the eigenvalues of A. If it's odd return cubed else return 54.

10 years ago

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Find product of eigenvalues of n*n magic matrix.
Find product of eigenvalues of n*n magic matrix. Example n=3 Matrix= [ 8 1 6; 3 5 7; 4 ...

10 years ago

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Find the product of the positive elements above the main diagonal.
Example Input A=[1 2; -3 0] Output 2

10 years ago

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Calculate the sum of elements of n*n Hilbert matrix.
Calculate the sum of elements of n*n Hilbert matrix. Example n=5 HilbertMatrix=[1.0000 0.5000 0.3333 0.2500 ...

10 years ago

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For given vectors x,y find coresponding spline coefficients.
For given vectors x,y find coresponding spline coefficients. Example x =[ -3 -2 0 2 3] y =[ 0 0 1 ...

10 years ago

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Get linearly independent vectors of given matrix.
Get linearly independent vectors of given matrix. Example matrix=[ 3 -1 0 0 ; 0 3 0 0...

10 years ago

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Calculate the centroid of a triangle
Info: https://en.wikipedia.org/wiki/Centroid Example Input: x = [0 0 1]; % x-coordinate y = [0 1 0]; % y-coordinat...

10 years ago

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Square root of a number
Write a code that will output the square root of x.

10 years ago

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What's size of TV?
Many people buy TV. Usually they ask about diagonal. But also important are width and height. Let's assume that all TV have rati...

10 years ago

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isnan()
Replace all nans with zeros

10 years ago

Answered
How do I generate a random number between two numbers, "n" number of times?
Without using a for-loop: a = 0; b = 255; n = 1000; x = a + (b-a).*rand(n,1); will generate n numbers randomly ...

10 years ago | 1

Answered
Plotting the data if all the data point is to be represented by a vertical bar from the x-axis (y=0) to the value of y for that point
y = randi(10,1,10); % generate random data figure; hold on; for ii=1:length(y) plot([ii ii],[0 y(ii)],'b'); e...

10 years ago | 1

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Answered
Plotting the data if all the data point is to be represented by a vertical bar from the x-axis (y=0) to the value of y for that point
bar(y);

10 years ago | 0

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Help converting cell to matrix of doubles (Large matrix)
I think datevec is what you want. d = datevec(data(:,1),'yyyy-mm-dd'); d = d(:,1:3); % if you only want to keep the year...

10 years ago | 0

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Answered
How do seperate a string in different strings while not creating new strings for variables
For diversity of answers, here is another option (although I do not claim it is better than other answers!): str = '# Donal...

10 years ago | 2

| accepted

Answered
Is there a way to reduce the precision of Matlab overall?
Here is a simple way to change the precision of a result: n = 4; % number of desired decimal points x = round(x*10^n)/10...

10 years ago | 1

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Matlab delete's value's from array
Suppose you have an M-by-N matrix (A) of NaNs, 0s, and 1s: M = 3648; % number of rows N = 4; % number of columns A ...

10 years ago | 0

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check if url exists for large files without downloading the file
It seems I stumbled upon a similar approach to Steven, but a few minutes too late! I think this function would do the trick: ...

10 years ago | 0

Answered
a matlab code of getting a value uniformly at random from a the set {-1,1}
To generate values uniformly from the set {-1,1}, use: N = 100; x = 2*(rand(N,1)>0.5)-1; where N is the number of val...

10 years ago | 2

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calculate the day of the year from a date string.
'09-Oct-2016' is the 283rd day of the year. So doy = dayoftheyear('09-Oct-2016') should return doy = 283

10 years ago

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Implement zero-based indexing for Matrices
Given an input vector and position (which is zero based) output the value Example: x = [1 2; 4 5] pos = [0 1] value = 5 ...

10 years ago

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Triplicate me
Given an input vector, output a 3n vector with all elements of input vector repeated thrice Example : in->[1 2 3 5] out...

10 years ago

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Calculate correlation.
There are two data. y1=[0 1 2 3 4]' y2=[2 3 4 5 6]' We can see positive relationship between y1 and y2. The relations...

10 years ago