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Vismay Raj


43 total contributions since 2019

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  • Knowledgeable Level 2
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Solved


Quote Doubler
Given a string s1, find all occurrences of the single quote character and replace them with two occurrences of the single quote ...

17 days ago

Solved


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...

17 days ago

Solved


Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

17 days ago

Solved


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...

17 days ago

Solved


Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

17 days ago

Solved


Cell joiner
You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...

17 days ago

Solved


Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

17 days 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...

17 days ago

Solved


Pangrams!
A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Example: Input s ...

17 days ago

Solved


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...

17 days ago

Answered
how can I get the html elements from javascript code?
I belive what you are trying to do is web scrapping then this tutorial might be helpfull to you

19 days ago | 0

Answered
read in the .csv file with ddMMyyyy HHmm data
you can read the file line by line as string https://www.mathworks.com/help/matlab/ref/fgets.html once it is read then A(1:2) w...

19 days ago | 0

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Answered
Connecting database 'MySQL' without using database toolbox
this page explains it very well

19 days ago | 0

Answered
fing barcode from a DNA Sequence
Maybe what you are looking for can be achieved through substrings this link can be helpfull

19 days ago | 0

Answered
Plot a single vector as a line
assuming that you want to draw a vector starting from (0,0,0) and to the specified point the following code can be used v = [-2...

25 days ago | 0

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Answered
Interpolation of matrices corresponding to time vector
this function might be useful https://www.mathworks.com/help/matlab/ref/interpn.html

25 days ago | 0

Answered
Does there exist something in Matlab that skips or returns to a point, when the value of the index does exceed the matrix dimensions?
trty this link about try catch : https://www.mathworks.com/help/matlab/ref/try.html

26 days ago | 0

Answered
How to trim a text file with start and end line numbers
read the file using filetext = fileread('file.txt') split the text on newline and store the array of lines in a new variable ...

26 days ago | 0

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Answered
finding same values in the same place in different columns
Not the right way but gets the job done, assuming the vectors are A and B ANSWER = ((A+B) == 2) + ((A+B) == 0) the brackets ar...

27 days ago | 0

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Answered
How to Insert New Image in Video as first frame?
Read the video using videoObj = mmreader(FileName); video = videoObj.read(); % the nth frame is accessed by video(:,:,:,n) R...

1 month ago | 0

Solved


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 ...

1 month ago

Solved


Scrabble Scores
Given a word, determine its score in <http://en.wikipedia.org/wiki/Scrabble Scrabble>. The input string will always be provi...

1 month ago

Solved


Elapsed Time
Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

1 month ago

Solved


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

1 month ago

Solved


Kaprekar Steps
6174 is the <http://en.wikipedia.org/wiki/6174_%28number%29 Kaprekar constant>. All natural numbers less than 10,000 (except som...

1 month ago

Solved


Pattern matching
Given a matrix, m-by-n, find all the rows that have the same "increase, decrease, or stay same" pattern going across the columns...

1 month ago

Solved


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...

1 month ago

Solved


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...

1 month ago

Solved


Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

1 month ago

Solved


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...

1 month ago

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