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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...

6 years ago

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Alphabetical Sorting (case insensitive)
Hello Aiden, Here's a simple (and likely not very efficient) bubblesort implementation of case-insensitive string array sorti...

6 years ago | 1

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What are (r min) & (r max) in "imfindcircles"?
Hello Shahin, I suspect that this is an accuracy issue. The recommendation from MathWorks is that for best results, the condi...

6 years ago | 0

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How to do method documentation for Classes/Handles just as normal functions in m files?
Hello Yasen You can provide help text for a function or class by doing the following: 1) Below the class or function defin...

6 years ago | 0

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How to link Pushbutton and Radiobutton (Matlab GUI)
Hello Durgesh I understand that you have multiple radio buttons and a push button, and that when the push button is clicked, ...

6 years ago | 0

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how can i do that for all columns?
Hi Ach The "sum" function in MATLAB returns the total of all elements in a column (or row) of a matrix. For more information ...

6 years ago | 0

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Permutations of integers with sum restrictions
Hi Christoph There are a couple of ways that you can do this: 1. Edit the source code of the "npermutek" function. Where t...

6 years ago | 1

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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

6 years ago

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

6 years ago

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Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

6 years ago

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when i excute my model it always give me this massage Failed to load URL https://localhost:31515/toolbox/simulink/simulink/slmsgviewer/slmsgviewer.html?snc=CRW1E5 with error (-111).
This is probably due to a network configuration issue (proxy). Make sure that any antivirus or firewall programs installed on...

6 years ago | 2

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Why does STRSPLIT, contradictory to the documentation, need escaped backslashes in delimiter-specification?
Hello Frederick The character '\n' is not generally treated as a newline character by MATLAB, unless it is along with certain...

6 years ago | 1

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How can I eliminate "PDE Toolbox Error! Too many input arguments"?
Hello Allen This issue most likely occurs because there are one or more functions in your current folder or the userpath (def...

6 years ago | 1

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Options in Genetic Algorithm don't work
Hello Luigi The *optimoptions()* function is part of the Optimization Toolbox, which is different from the Global Optimizatio...

6 years ago | 4

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How do i use str2func for methods within a class?
Hello Jimmy Here is my understanding of what you are trying to achieve: 1. Class A has a function, let's say, functionA ...

6 years ago | 1

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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...

6 years ago

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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...

6 years ago

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Matlab and GAMS Interface
Hi The following link discusses how to interface GAMS with MATLAB: <http://pages.cs.wisc.edu/~ferris/matlab/gdxmrw.pdf> ...

6 years ago | 0

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Read Information of Line with keyword from File
Hello Simon You can use the *fgets()* or *fgetl()* functions from MATLAB to read the file line-by-line into an array. These w...

6 years ago | 0

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How to prevent over-writing the y2 in my interpolation?
Hello Ismail, I understand that you have 100 plots, and a data file containing 40 columns, and that in each plot, you want to...

6 years ago | 0

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How to select columns from data matrix using "for" loop?
Hello Ismail, I understand that you have 100 plots, and a data file containing 40 columns, and that in each plot, you want t...

6 years ago | 0

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Table Indexing and trained model prediction
Hi Sally, It looks like the issue is with the following line: table = table(age,ethnicity,gender,height); This issu...

6 years ago | 1

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sdl video display is black in image inversion example
Hello Hemant Ghuge, I understand that you are unable to see the video on the SDL Video Viewer block while running in External...

6 years ago | 0

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

6 years 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...

6 years ago

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De-dupe
Remove all the redundant elements in a vector, but keep the first occurrence of each value in its original location. So if a =...

6 years ago

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

6 years ago

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Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

6 years 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...

6 years ago

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Is my wife right?
Regardless of input, output the string 'yes'.

6 years ago