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David Hill


Last seen: 2 Tage vor Aktiv seit 2017

Electrical Engineering with minors in Computer Science and Mathematics. Working as an Undergraduate Research Assistant in the field of Robotics.

Programming Languages:
Python, C++, C, Java, Javascript, R, MATLAB, CSS, Arduino
Spoken Languages:
English, Spanish
Professional Interests:
Robotics and Autonomous Systems, Embedded Systems

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  • 5-Star Galaxy Level 4
  • Word Puzzles Master
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  • Sequences And Series II Master
  • Cody5 Easy Master

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Gelöst


Median filter over three values
Implement 1-D median filter over input vector x as described: Moving window size is 3 Output is middle/central value in moving...

ein Tag vor

Gelöst


Generate Hadamard Matrix
In mathematics, a Hadamard matrix, named after the French mathematician Jacques Hadamard, is a square matrix whose entries are e...

ein Tag vor

Beantwortet
How to make a 'case' go over each element in a vector ?
tcue = TIMES+floor(NS)-0.5;

2 Tage vor | 0

Beantwortet
Randomize vector avoiding consecutive values
leftSides = [1,3,5]; leftPos_trials = repmat(leftSides,1,14); idx=randperm(42); while any(diff(leftPos_trials(idx))==0) ...

3 Tage vor | 0

Beantwortet
Iteration over for loop using a vector
n_trial = 12; n_probe =7; longer_array = [1:84]; for trial = 1:n_trial for probe = 1:n_probe longer_array((trial...

3 Tage vor | 0

| akzeptiert

Gelöst


Compute the area of the shoemaker’s knife
A shape resembling a shoemaker’s knife is constructed from a semicircle with diameter with two semicircular “bites” of diameter...

8 Tage vor

Gelöst


Find patterns in subprime Fibonacci sequences
Lots of Cody problems involve Fibonacci and Collatz sequences. Fibonacci sequences start with two numbers, and later terms are c...

8 Tage vor

Gelöst


Hermite Polynomials
Problem 1304 deals with Hermite polynomial of the physicist's type. In this problem, Return the n-th Hermite polynomial of the ...

8 Tage vor

Gelöst


About jokes (and compression)
An argument can be made about jokes. The shorter they are, the funnier. Further explained here: https://en.wikipedia.org/wiki/Hu...

10 Tage vor

Gelöst


Counting Permutations
In the permutations of the numbers 1 to n, count the number of permutations in which exactly m elements are greater than the pre...

11 Tage vor

Gelöst


Play with array Min-Max
An array is provided. For example, a= [ 2,1,11,4,5,13] Create an array from a like this way, out= [ 1,11,2,13,4,5] ➢ 1st take...

12 Tage vor

Gelöst


An array is given that contains the marks. Find out the highest 3 marks
An array is given that contains the marks received by a group of students in their class test. Find out the highest 3 marks rec...

12 Tage vor

Gelöst


Given a matrix X, manipulate it accordingly
Given a matrix X, 1st add a column to the matrix whose elements are the summation of each rows. Then add a row to the matrix who...

12 Tage vor

Gelöst


An array is given. Find the unique elements of the array. [keep the sequence unchanged]
An array is given. Find the unique elements of the array. [keep the sequence unchanged] For example if input x=[2 ,4 , 9 ,2 ,...

12 Tage vor

Gelöst


Find alternating sum
Given an array, find alternating sum i.e. – y = x (1) – x (2) + x (3) – x (4) + x (5) - …

12 Tage vor

Gelöst


Extract the prime numbers
Given a list of elements, extract the prime numbers from that array.

12 Tage vor

Beantwortet
Professor needs specific color for bar graph, but the hex code for the color is not working.
bar(1,10,'FaceColor','#18453B')%use FaceColor

15 Tage vor | 0

Beantwortet
I am learning still and i have no idea how to write 8y''' - y' = cos(20t) + sin(2t) in matlab
Your boundary condition was not provided. [t,y] = ode45(@vdp1,[0 1],[0; 0; 0]); subplot(3,1,1); plot(t,y(:,1)); subplot(3,1,...

15 Tage vor | 0

Beantwortet
How to convert categorical data to double with unique rows
a=readtable('Book1.xlsx'); b=zeros(size(a)); b(ismember(a.Vertical_Steering,'Limbo'))=6

17 Tage vor | 1

| akzeptiert

Beantwortet
Matrix manipulation / if else loops
Misunderstood you previously. m = [0 0 0; 1 0 0; 1 1 0; 1 0 0; 1 0 0; 1 1 1; 0 1 1; 0 1 1; 1 1 1; 1 1 0; 1 1 0; 1 0 0; 1 1 0; 1...

17 Tage vor | 0

| akzeptiert

Beantwortet
How I find four or five colunms with distict rows from a table
First convert your table into a matrix using table2array() A=randi(100,115,64); k=nchoosek(1:64,5);%all combinations of 5 colu...

17 Tage vor | 0

Gelöst


Compute the unitary totient of a number
The totient function , the subject of Cody Problems 656 and 50182, gives the number of integers smaller than that are relativel...

etwa ein Monat vor

Gelöst


Easy Sequences 84: Digits of Powers of 5
OEIS sequence #A008566, deals with the following series: This sequence is the digits of powers of 5 listed si...

etwa ein Monat vor

Gelöst


Travelling Salesman Problem (TSP)
Find a short way through given points. This is the travelling salesman problem. But the solution should be a fast and small func...

etwa ein Monat vor

Gelöst


Locate image wells
A mathematical model of wells pumping groundwater near a boundary can be constructed using the method of images, which is also u...

etwa ein Monat vor

Gelöst


Determine if input is a Harshad number
In mathematics a harshad number (or Niven number) in a given number base is an integer that is divisible by the sum of its digit...

etwa ein Monat vor

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