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# Neeraj Rajpurohit

##### Last seen: 21 days ago
26 total contributions since 2020

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

5 months ago

Cannot connect to mongoDB (version 4.2.6, authentification error)
Hi, This is a problem I encountered as well. The problem occurs becuae the database name is not being set in the mongo.m class....

5 months ago | 0

Matrix Array Reshaping by fixed columns
Hi, I think reshape(arr, [], columnSize) would reshare the array with number of columns as coulmnSize in each row, which is 2...

5 months ago | 0

Solved

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...

5 months ago

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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 ...

5 months ago

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Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

5 months ago

Solved

Find the longest sequence of 1's in a binary sequence.
Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

5 months ago

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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...

5 months ago

How do I connect Matlab to MongoDB Atlas?
Hi, Jasmine's answer here would work in my opinion. However, for best experience, I would recommend you to go with the version ...

5 months ago | 0

What is the variable 'self' in MATLAB class?
As Daniel has rightly written, obj is usually writtern instead of 'self' in definition of methods in MATLAB classes. If the fu...

5 months ago | 0

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Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

5 months ago

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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...

5 months 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...

5 months ago

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

5 months ago

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; ...

5 months ago

'Access-Control-Allow-Origin'
Hi, In my opinion this is because you are accessing the API from a file. You will need to apply different solutions to differen...

5 months ago | 0

Run a loop on struct field
Hi, You can use the below mentioned command to get a string array of all the fields in a struct s. fields = string(fieldnames(...

5 months ago | 0

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Extract info from .json file by matlab
fileName = 'filename.json'; % filename in JSON extension fid = fopen(fileName); % Opening the file raw = fread(fid,inf); % R...

5 months ago | 1

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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 ...

5 months ago

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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...

5 months ago

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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...

5 months 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...

5 months ago

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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 ...

5 months ago

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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...

5 months ago

Solved

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:...

5 months ago