Dyuman Joshi
Mechanical Engineer (IITG '20) | Moderator - MATLAB Cody since Jan 2021 | Time zone - IST (GMT +5.30) For any queries related to MATLAB Cody/Answers, contact me through my profile.
Python, MATLAB
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English, Hindi
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Fluid Dynamics, Aerospace Engineering, Computational Fluid Dynamics (CFD), Hydraulics and Pneumatics
Statistics
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Solved
Translating parabola by its vertex to the origin
Given a quadratic polynomial, p(x) = ax^2 + bx + c (a ~= 0), represented by the vector [a b c], consider the translation of the ...
1 hour ago
Solved
Convert a diagonal representation of a matrix element to linear index or subscripts
Elements in matrices in MATLAB can be retrieved by linear index or subscripts. For example, the 1 in the matrix below has a line...
2 hours ago
Solved
FEN to Chess Board
Note: This problem is the reverse, or complement, of Problem 61144 - FEN Chess Notation. Given a FEN (Forsyth-Edwards Notation)...
2 hours ago
Solved
Chrono Matrix: Reconstructing the Time Portal
Your time-travel scanner has captured fragments of a portal matrix scattered across eras. Each fragment contains partial informa...
3 days ago
Solved
Container With Most Water
You are given an integer array height . There are vertical lines drawn such that the two endpoints of the ith line are (i, 1) an...
3 days ago
Solved
Pascal's Pyramid - A Variation with an Arial View
Let's create a matrix of size N x N containing a Pascal's Triangle in each quadrant that diverges from the centre to form an ari...
4 days ago
Solved
finding vector pair with min angle between them
given a matrix with more than one row , compare row vectors of the given matrix and find the pair with the minumum angle between...
5 days ago
Solved
Pascal's Triangle
Create a matrix of size N x N containing a Pascal's Triangle that starts from the upper left corner according to the test cases ...
6 days ago
Solved
The Case of the Missing Prototype – Match the Footprints Found in the Lab to the Suspects’ Shoe Sizes
The dust on the Innovation Lab floor reveals several footprints.You’ve measured their shoe sizes and noted them in a vector size...
7 days ago
Solved
The Case of the Missing Prototype – Detect Tampered Sensor Readings from the Stolen Device’s Data Logs
You’ve recovered partial sensor data from the stolen prototype.Each reading is stored in a numeric vector data, but something se...
7 days ago
Solved
The Case of the Missing Prototype – Calculate the Car’s Average Speed Between GPS Readings to Trace the Escape Route
Using GPS data, you’ve obtained the total distance (in meters) traveled by the suspect’s car at equal time intervals.These readi...
7 days ago
Solved
Don't Include a Five
Given a vector A, return vector B with all 5s replaced with 0s.
7 days ago
Solved
Don't Include a Five (Part Two)
Given a vector A with at least one non-five, return vector B, with all fives excluded (not replaced by zeros).
7 days ago
Solved
The Five Infection (Boss Level)
Given a 3x3 matrix A, replace: every value that is equal to five every value that is directly adjacent to a five with zero in...
7 days ago
Solved
Compute frequency factors for the normal distribution
In frequency analysis in hydrology, the streamflow corresponding to a specified exceedance probability (or return period ) can...
7 days ago
Solved
Compute the area of a lune
Write a function to compute the area of the shaded moon-shaped region in the figure below—that is, the area of a smaller circle ...
7 days ago
Solved
Compute the total length of lines between all vertices of a regular polygon
Write a function to compute the total length of between all vertices of a regular polygon inscribed in a unit circle. For exampl...
7 days ago
Solved
nxn matrix with elements from 1:n^2
input n defines the dimension of a square matrix to be filled from 1 to n^2 with 1 in upper left corner and n^2 in bottom right...
7 days ago
Solved
Bullseye Matrix with Zeros
Inspired by Problem 18, create a bullseye matrix with the addition of padding equal to 0 between concentric rings. Matrices are ...
7 days ago
Solved
Creating a matrix by taking shifted copies of a given vector v as columns
This problem is the same as the problem 761 except that here we are testing it for any given vector ; a row or column vector. Th...
8 days ago
Solved
Find the surface area of a cone.
For instance, Given r (radius) = 3, and s (slant height) = 5: surface area should be 94.
8 days ago
Solved
Collect a set of candy wrappers
This past Halloween, the siblings Matilda and Labrun amused (and sometimes confused) their many neighbors with their costumes in...
9 days ago
Solved
Divisible by 5
Pursuant to the first problem in this series, this one involves checking for divisibility by 5. Write a function to determine i...
9 days ago
Solved
Divisible by 4
Pursuant to the <http://www.mathworks.com/matlabcentral/cody/problems/42404-divisible-by-2 first problem> in this series, this o...
9 days ago
Solved
Inscribed Pentagon? 2
Your function will be provided with the five vertices of a pentagon (p) as well as the center point (cp) and radius (r) of a cir...
9 days ago
Solved
5th Time's a Charm
Write a function that will return the input value. However, your function must fail the first four times, only functioning prope...
9 days ago
Solved
Carmichael Number
Car michael number is a composite number which satisfy following relation: for all integers which are coprime to . ...
9 days ago
Solved
Extract diagonal of sparse quadratic form
Consider the matrix A and vector v given by, A=round(sprand(5e3,1e4,1/1e4*100)*100); v=randi(10,width(A),1); Write a rout...
10 days ago
Solved
2x2 binning of a large sparse matrix
Consider the 20000 x 20000 sparse matrix, A=round(sprand(2e4,2e4,1/1e4*100)*1000); The task is to divide this matrix into 2x...
10 days ago
Solved
Condition number of Kronecker product
Given NxN matrix A and MxM matrix B, where M,N<=1000, write a routine to compute the condition number of kron(A,B).
11 days ago











