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David Hill


Last seen: 1 day ago Active since 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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Solved


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...

1 day ago

Solved


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...

1 day ago

Solved


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

1 day ago

Solved


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...

4 days ago

Solved


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...

5 days ago

Solved


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...

5 days ago

Solved


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...

5 days ago

Solved


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...

5 days ago

Solved


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 ,...

5 days ago

Solved


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

5 days ago

Solved


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

5 days ago

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

8 days ago | 0

Answered
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,...

8 days ago | 0

Answered
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

10 days ago | 1

| accepted

Answered
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...

10 days ago | 0

| accepted

Answered
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...

11 days ago | 0

Solved


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...

23 days ago

Solved


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...

25 days ago

Solved


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...

26 days ago

Solved


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...

26 days ago

Solved


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...

26 days ago

Solved


Compute the largest number with a given integer complexity
Cody Problems 42831 and 42834 ask us to compute integer complexity, the smallest number of 1s needed to construct a number with ...

26 days ago

Solved


Compute the Tetris sequence
In the Tetris sequence, which starts with a 1, the next term is the smallest positive integer not already in the sequence that h...

26 days ago

Solved


JannaT is Loved By Me
JannaT was sTarTed loved by me and that time was in 2020. A year when JannaT will starT loving me when the year divided from th...

28 days ago

Solved


Easy Sequences 87: Perfect Power Modular Residue of a Nested Sum-product Function
For a positive integer , we define the function , as follows: ; and for . He...

28 days ago

Solved


Compute a nested cube root
Consider the quantity . Write a function to compute without using loops or recursion.

28 days ago

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