David Hill
Programming Languages:
Python, C++, C, Java, Javascript, R, MATLAB, CSS, Arduino
Spoken Languages:
English, Spanish
Professional Interests:
Robotics and Autonomous Systems, SLAM, Embedded Systems
Python, C++, C, Java, Javascript, R, MATLAB, CSS, Arduino
Spoken Languages:
English, Spanish
Professional Interests:
Robotics and Autonomous Systems, SLAM, Embedded Systems
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Solved
hanoi towers II
with 3 rods (1,2 & 3), the goal is to move a tower of n disks from rod #1 to rod #3. You can move disks only one by one, on the...
6 hours ago
Solved
Create a matrix that counts up diagonally
Given a single input _N_, create a _N_ x _N_ matrix that counts from 1 : _N_ ², (along up-right diagonals, starting with 1 in th...
6 hours ago
Solved
How close to a hole
Suppose you have a description of good places (ones) and bad places (zeros). You want to know your distance from a bad place (in...
8 hours ago
Solved
Fun with a compass
Each night for the past week, you have been having the same nightmare: You find yourself back in your junior high school geometr...
8 hours ago
Solved
Convert a vector to a lower triangular matrix
I now have a row vector and I want to convert it to a lower trilangular matrix. The rows of the lower trilangular matrix have t...
8 hours ago
Solved
Prime Time
All you need to do here is submit your solution a prime number of seconds after the top of the hour. Any hour at all... Easy, ...
9 hours ago
Solved
FizzBuzz
<http://c2.com/cgi/wiki?FizzBuzzTest FizzBuzz Test> The "Fizz-Buzz test" is an interview question designed to help filter out...
11 hours ago
Solved
Rank of magic square (for beginners)
Compute the rank r of a magic square of order n WITHOUT rank and magic functions.
11 hours ago
Solved
Young's modulus
Given a value of <http://en.wikipedia.org/wiki/Young_modulus Young's modulus> (Y) expressed on MegaPascal, convert it to the uni...
23 hours ago
Solved
Subtract two positive numbers
Given a and b as a string, return b-a without using string to number conversion functions. a and b must to be a same size and b ...
23 hours ago
Solved
Generate Hadamard Matrix without using hadamard function
In mathematics, a Hadamard matrix, named after the French mathematician Jacques Hadamard, is a square matrix whose entries are e...
23 hours ago
Solved
Queen's move
given a number of consecutive moves of queen, check for their validity based on their previous position.... but remember if u g...
1 day ago
Solved
Create a 3D rotation matrix from roll-pitch-yaw angles
Consider a robotics application where the world reference coordinate frame {W} and a robot manipulator arm with an attached tool...
1 day ago
Solved
Moving Median Absolute Deviation
The median absolute deviation (MAD) is defined as MAD = median(abs(A − median(A))) for a rolling window of length n. For examp...
1 day ago
Solved
Recurrence relation
A recurrence relation is given by P(1) := 1 P(n+1) := exp(1) - (n+1)*P(n) Write a function that, given an integer |...
1 day ago
Solved
Upstairs!
The stair has n steps. Every times you can up one or two steps. Give all the different solutions to upstairs. For example n ...
1 day ago
Solved
Higher! Lower!
My kids have started to play the "I'm thinking of a number between X and Y" game in the car on trips to and from their swim less...
2 days ago
Solved
Determine roll pitch yaw angles from a 3D rotation matrix
Consider an aerospace application where the world reference coordinate frame {W} and a body-fixed coordinate frame {B}. The ori...
2 days ago
Solved
Now 20% off!
Furloughs are hitting government workers this year. To commemorate getting one unpaid day off each week until the end of Septem...
2 days ago
Solved
Coin Tossing: Probability of Same Heads for N tosses
A pair of physicists toss a coin n times each. What is the probability that they tossed the same number of heads? Input: N % n...
2 days ago
Solved
Tell your secret
A secret can be told only to 2 persons in 5 minutes. Now, these 2 more persons can spread the secret to 4 other people in the ne...
2 days ago
Solved
Vigenere cipher - be like Sherlock Holmes!
You're a young detective. Every detective needs a function to decrypt a vigenère cipher. It's a modification of a caesar cipher....
2 days ago
Solved
Exponents in Factorials(hard)
This is problem is a harder version of "Problem 44747. Exponents in Factorials". <https://ww2.mathworks.cn/matlabcentral/cody/p...
2 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...
2 days ago
Solved
Can you beat the lottery?
Well this one you may not get every time, but it is a lottery! Here is the code that generates the lottery numbers (you can try ...
2 days ago
Solved
Who am I ?
Who am I ? Write any function that reveals itself under these constraints. Hint: I am combinatorial code, and I don't like stat...
2 days ago
