# David Hill

### Carnegie Mellon University (CMU)

Master's Student in Robotic Systems Development (MRSD), BS Electrical Engineering with minors in Computer Science and Mathematics.

**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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**Content Feed**

Solved

Recursive Standard Deviation

When you have a large set of data, it can be resource consuming to calculate standard deviation at every step. So why not calcul...

3 dagar ago

Solved

Which way to go?

Given an m*n grid, How many ways are there to go from upper left corner to the lower right one? You can only move right...

3 dagar ago

Solved

Number Persistence

A number's persistence is the number of steps required to reduce it to a single digit by multiplying all its digits to obtain a ...

3 dagar ago

Solved

Slicing the cube

A bored matlab enthusiast has a cube with volume n^3. He decides to paint the entire surface of the cube red. Then, with slices...

3 dagar ago

Solved

How many rectangles in a grid ?

How many rectangles are there in an m × n grid ? For example, if m=1 & n=2, we have 3 rectangles.

3 dagar ago

Solved

Grid traversal

Given a line defined by (x1,y1) & (x2,y2),return the number of squares that the line crosses on the grid (a square is 1x1). ...

3 dagar ago

Solved

007: Chinese Barrack Invasion

*MISSION:* Successfully invade a military barrack located in China. *WARNING:* There is a row of _n_ security switches protec...

3 dagar ago

Solved

Graph Algorithms 3: Number of Connected Components

Given an adjacency matrix of a simple undirected graph, find the number of connected components.

4 dagar ago

Solved

Průměr z výběrového souboru

Napište funkci, která vrátí průměr z hodnot vektoru data. Např data = [1, 2, 3, 4, 5, 6, 7, 8, 9] je prumer = 5.

4 dagar ago

Solved

Decrypt a secret message!

The crypto system in question is based on phone keyboard. We need two numbers in order to decrypt a word. First number represent...

4 dagar ago

Solved

Peg Solitaire - Apply Move

About Peg Solitaire . Previous Problem. Consider inital board; If we move the peg located on (4,6) to the left (4) directio...

5 dagar ago

Solved

Kurosu solver

This problem is related to <https://www.mathworks.com/matlabcentral/cody/problems/44657-kurosu-checker Problem 44657>. The ga...

5 dagar ago

Solved

Factorizing a number into a given number of factors

Given a positive integer, n, and another positive integer, b, return a matrix, M, of width b, with the following properties: (a)...

5 dagar ago

Solved

Kurosu checker

The game of Kurosu is simple. A square grid contains cells that can be filled with either a 'X' or an 'O', similarly to a tic-ta...

5 dagar ago

Solved

Mean number of letters per word (Hard)

The previous problem in this series is <https://www.mathworks.com/matlabcentral/cody/problems/44852-mean-number-of-letters-per-w...

5 dagar ago

Solved

Optimally fill a container with elements of different sizes

Given a row vector V of different numerical values and a size limit L, return a 1x2 vector A, containing (a) the largest sum of ...

5 dagar ago

Solved

Characterize fluid flow in a pipe as to laminar or turbulent

In fluid mechanics, characterizing the flow in a pipe is essential to predicting its behavior. The flow pattern can either be la...

6 dagar ago

Solved

¿Es una parábola?

Dados los datos de las magnitudes _*x*_ e _*y*_, crear una función que permita conocer si se trata de una parábola o no, indican...

6 dagar ago

Solved

Permute the unique values of a vector without sorting

Given a vector A, return the matrix B, wherein each row contains a permutation of the unique values in original vector while ret...

6 dagar ago

Solved

Update course numbers and abbreviations

Suppose that the educational institution where you teach purchases new software to handle many essential functions, including co...

7 dagar ago

Solved

Finding the next number in a number list, are you able to crack it!

So it goes like this, I give a number list and you find the next value! I found a way to do it, just wondering how many other...

9 dagar ago

Solved

Find same numbers touching each other...

So the goal here is to find any number that is equal to its immediate neighbors and mark it true. Here is some examples: x...

9 dagar ago

Solved

USC Fall 2012 ACM : Code Word Minimum Flipped Bits

This Challenge is to solve Question A of the <http://contest.usc.edu/index.php/Fall12/Home USC ACM Fall 2012 Contest>. Given ...

9 dagar ago

Solved

Dice face matrix!

This is dice simulator, but instead of making a random die number, you will receive an "pre-rolled" number in and spit out a mat...

10 dagar ago

Solved

Frequency Analysis of Text

Frequency analysis is a common task in cryptoanalysis. It is essentially counting the occurrences of alphabets (regardless of ca...

10 dagar ago

Solved

Usage of java.math : N Choose K with unlimited precision

Calculate the binomial coefficient nchoosek with full accuracy. This challenge may use the wonderful word of java.math that allo...

10 dagar ago

Solved

Molecule Atomic Wt (CHONS) Molecules

Given a molecular equation string determine its atomic weight. Limited atoms of C H O N and S where wts are rounded to [12 1 16...

10 dagar ago

Solved

Create Volcano (or Atoll) martix. It is an extension of Bullseye matrix problem.

For example, if n=2 (maximum value), the output matrix should be [1 1 1 1 1; 1 2 2 2 1; 1 2 1 2 1; 1 2 2 2 1; 1 1 ...

11 dagar ago

Solved

Time and Variable mapping and matching

There is a 6X5 cell array where * 1st column represents time values * 2nd and 3rd column represent variables and their value...

11 dagar ago