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Akshay Malav


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How to get the row and column from a matrix?
Below is the code snippet for it . [row column] = size(A) % size returns the rows and columns of matrix A Here is the doc for...

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How to declare a cell array of a particular size n ?
This question has been answered before Here.

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how to write or condition in if statement matlab?
if (j==i) | (flag(j)==1) % your code end

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creating an empty cell in an array
Then use this code. A = [1 NaN 2]; B = rmmissing(A) % will remove NaN from array A The B array wil be [1 2]

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Not able to excecute the code
First change the number of rows from 0 to 1 and correspondingly the rows array should contain only 1 element either 'A' or 'B'. ...

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How to find values for corresponding start and end positons
Here is the sample code filename = 'mysheet.xlsx'; %read the excel filr A = xlsread(filename); %store the content...

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How to read images from the folder and select region of interest (rectangular) once
1) I am attaching a self explanatory code % Get list of all jpg files in this directory imagefiles = dir('*.jpg'); n...

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Extract cell with number lines and columns
So let's say A is the cell array and you want to access it's 4th element then you can do A{4} . And now if you want to access l...

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"Invalid Security Token" error during Login
Please follow the below link , I hope it helps. https://www.mathworks.com/matlabcentral/answers/341784-why-do-i-receive-the-log...

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Extract cell with number lines and columns
Okay here is the explaination Let's say that you have a cell Array A which contains a cell array inside it ,it has dimension f...

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How to normalize time periods
Hi , there is a inbuilt function in matlab to normalize the data . Look at the link mentioned below . The function is V = norma...

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A résolu


Target sorting
Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...

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The Goldbach Conjecture, Part 2
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

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The Goldbach Conjecture
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

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Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

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Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

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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...

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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 ...

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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...

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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...

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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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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...

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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...

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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 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 ...

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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:...

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Add two numbers
Given a and b, return the sum a+b in c.

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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...

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Trimming Spaces
Given a string, remove all leading and trailing spaces (where space is defined as ASCII 32). Input a = ' singular value deco...

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