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Vismay Raj


Active since 2019

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

5 years ago

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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...

5 years 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...

5 years 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...

5 years ago

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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...

5 years ago

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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...

5 years ago

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

5 years ago

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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 years ago

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

5 years ago

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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...

5 years 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

5 years 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...

5 years ago | 0

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

5 years ago | 0

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

5 years ago | 0

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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...

5 years ago | 0

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

5 years ago | 0

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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

5 years 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 ...

5 years 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...

5 years 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...

5 years 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 ...

5 years 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...

5 years 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, ...

5 years 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 ...

5 years 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...

5 years 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...

5 years 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...

5 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...

5 years ago

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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...

5 years ago

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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...

5 years ago

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