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t test ( not sure if my implementation is correct)
N=randi(100,5,4);%your matrix; R=randi(100,5,4);%your matrix h=1; for n=1:4 for r=1:4 H(h)=ttest(N(:,n),R(:,r));...

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How can I load data from Excel file to Matlab in script and use the data loaded to calculate?
Use readmatrix or readtable. If you attach your spreadsheet we could help more.

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Greek character print in the command window, but not when I publish a script.
display(char(945)); display(char(946));

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how to use elements from array to sort data
Keep your data stored in matrices that you can index into. numdata = xlsread("res Data.xlsx"); Q=numdata(1:5,:); F=numdata(6:...

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How to create a function which takes one column of data as its input and another as its output
Just use the find function. find rng(1) A=randi(100,10,2) f=A(find(A(:,2)==88),1)

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Bessel Function Calculation in Matlab
You need to increase your k as z gets larger. n=sym(1); F(1)=n; for k=1:202 F(k+1)=F(k)*k; end J=zeros(1,60); for z=1:...

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A résolu

Sequence problem
find the nth term of the sequence: 790 1303 2033 ____ 4366 6095

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product between doubles 200*200
F= 1 -((1-prob1).*(1-prob2).*(1-prob3));

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A résolu

Repeat a string (not a character array)
True string are a relatively recent addition to MATLAB, first having been available in R2016. Strings contrast with character ar...

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A résolu

Median filter over three values
Implement 1-D median filter over input vector x as described: Moving window size is 3 Output is middle/central value in moving...

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Generate Hadamard Matrix
In mathematics, a Hadamard matrix, named after the French mathematician Jacques Hadamard, is a square matrix whose entries are e...

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How to make a 'case' go over each element in a vector ?
tcue = TIMES+floor(NS)-0.5;

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Randomize vector avoiding consecutive values
leftSides = [1,3,5]; leftPos_trials = repmat(leftSides,1,14); idx=randperm(42); while any(diff(leftPos_trials(idx))==0) ...

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Iteration over for loop using a vector
n_trial = 12; n_probe =7; longer_array = [1:84]; for trial = 1:n_trial for probe = 1:n_probe longer_array((trial...

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A résolu

Compute expulsions from the Kimberling shuffle

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Compute a row of the Kimberling shuffle

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Compute the largest number possible with the Brussels choice

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Deduce the pattern behind the sequence

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Compute the area of the shoemaker’s knife
A shape resembling a shoemaker’s knife is constructed from a semicircle with diameter with two semicircular “bites” of diameter...

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Find patterns in subprime Fibonacci sequences
Lots of Cody problems involve Fibonacci and Collatz sequences. Fibonacci sequences start with two numbers, and later terms are c...

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Hermite Polynomials
Problem 1304 deals with Hermite polynomial of the physicist's type. In this problem, Return the n-th Hermite polynomial of the ...

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About jokes (and compression)
An argument can be made about jokes. The shorter they are, the funnier. Further explained here: https://en.wikipedia.org/wiki/Hu...

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Counting Permutations
In the permutations of the numbers 1 to n, count the number of permutations in which exactly m elements are greater than the pre...

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Play with array Min-Max
An array is provided. For example, a= [ 2,1,11,4,5,13] Create an array from a like this way, out= [ 1,11,2,13,4,5] ➢ 1st take...

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An array is given that contains the marks. Find out the highest 3 marks
An array is given that contains the marks received by a group of students in their class test. Find out the highest 3 marks rec...

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Given a matrix X, manipulate it accordingly
Given a matrix X, 1st add a column to the matrix whose elements are the summation of each rows. Then add a row to the matrix who...

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An array is given. Find the unique elements of the array. [keep the sequence unchanged]
An array is given. Find the unique elements of the array. [keep the sequence unchanged] For example if input x=[2 ,4 , 9 ,2 ,...

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Find alternating sum
Given an array, find alternating sum i.e. – y = x (1) – x (2) + x (3) – x (4) + x (5) - …

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Extract the prime numbers
Given a list of elements, extract the prime numbers from that array.

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Professor needs specific color for bar graph, but the hex code for the color is not working.
bar(1,10,'FaceColor','#18453B')%use FaceColor

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