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S-T-R-E-T-C-H I-T O-U-T
You will be given a row of numbers (x), and a single number (n). Your job is to write a script that will stretch out the row of...

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Sorting integers by their digits (Level 4)
This is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/42815-sorting-integers-by-their-digits-level...

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Sorting integers by their digits (Level 2)
This is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/42809-sorting-integers-by-their-digits Probl...

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Sorting integers by their digits (Level 3)
This is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/42811-sorting-integers-by-their-digits-level...

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Look Up Mapping
Let the input is A = {[] [] [] [1] []}; B = {'A','B','C','D','E'}; Mapped Output = 'D';

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tf or "transfer function" will not work on my fresh install of matlab
One of the common errs happen with many users is that accidentally without intention you may have called a variable or m-file or...

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Compound interest in a for loop
v=p; for N=2:length(n) y(N)=(v(N-1)*(1+r).^N+c) v(N)=v(N-1)+y(N); % specify the index and you will get all the value...

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how to take mean of matrices stored in .xlsx format?
Start with data import: readtable() or xlsread() Compute the averages using mean() or mean2() whether you want to compute the...

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What should be dimension of surf(X,Y,Z) 3D?
There are a few errs and missing points in your code. Here is the corrected complete code. clearvars; format long g; load('d...

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How to retrieve data points from a grayscale histogram?
(1) Import// read your image in matlab (2) perform histogram analysis with hostogram(), e.g: h= histogram() or h = histogram2()...

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how can i find R2 (Rsquared) for regression problem in matlab?
R-squared can be computed easily from your derived fit model vs. your original data. Moreover, R-square can be computed in Stati...

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Heun's method stiff ODE
There are a few crucial errs in your code. Here is the completely corrected code. Note that the step size of h1 = 1 gives very c...

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exact solution for system first order ODEs
You shall try dsolve() if your system of ODEs can be solved analytically via Symbolic MATH. https://www.mathworks.com/help/symb...

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problem with f surf
THere are a few errs in your code - loop calculations and redefining 'f3'. Here is the corrected code: ... series=0; for k=...

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Autocorrelation with big data
One typo that caused the error: plot(lags/fs, autocor); % autocor is the variable name NOT autocorr

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intensity of dought events
Use can use mean()

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Weave two matrices together to form one matrix
Take the first column from matrix a, then insert the first column from matrix b, and so on. For example: a = [1 2 3 4]; b ...

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Zero Cross
Write a function that counts the number of times n a signal x changes sign. Examples x = [1 2 -3 -4 5 6 -7 8 -9 10 11] ...

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How to plot different lengths of vectors?
Check your constants, R, deltaHrxn1, deltaHrxn2,... Note that the solutions might have two components, real and imaginary parts...

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generate number in particular way
A = [1 5 2 7]; MAX = 10; generate a array Y = [1 2 2 2 2 2 3 3 4 4]; i.e. total eleme...

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Sorting integers by their digits (Level 1)
Given a vector, v, of positive integers, return a vector, w, by sorting v in ascending order, such that primary sorting is done ...

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Check if a rotated array was originally sorted
Suppose a sorted array is rotated at some pivot unknown to you. For example, |[0 1 2 4 5 6 7]| might become |[5 6 7 0 1 2 4]|. ...

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Is there a better way to solve this multidimensional array?
Use mean2() intead of mean() that will help you to get rid of all loops.

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How to insert data with fopen ?
THis is how you can export data from MATLAB into an external file: FID =fopen('MYData.dat', 'w'); STR =':Frame 1 ...

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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...

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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...

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Find the largest number
Find the largest number |x| among 4 numbers given as variables |a|, |b|, |c|, and |d|. Example: Input: a = 4; b = 7; c ...

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02 - Vector Variables 3
Make the following variable: <<http://samle.dk/STTBDP/Assignment1_2c.png>> (all the numbers from 5 to -5 in increments of ...

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Which doors are open?
There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...

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Find the palindrome
Given the string a, find the longest palindromic sub-string b. So when a = 'xkayakyy'; you should return b = 'kayak';

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