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ChrisR


Last seen: 1 jour il y a Actif depuis 2015

I teach courses in water resources and environmental fluid mechanics.

Statistiques

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  • MATLAB Central Treasure Hunt Finisher
  • Knowledgeable Level 1
  • First Answer
  • Project Euler I
  • Strings II Master
  • R2016b Feature Challenge Master
  • Magic Numbers Master
  • Quiz Master
  • Sequences And Series III Master
  • Computational Geometry I Master
  • Matrix Manipulation II Master
  • Strings III Master

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A résolu


Calculating distance of lightning based on time delay
If we know the time delay between when we see lightning and hear thunder then we can calculate approximate distance(in meters) o...

5 jours il y a

A résolu


Image Series 3 Complementary
Find the Complementary of image which is 8 bits gray scale image. Each pixel is converted to binary format in the image. A...

6 jours il y a

A résolu


Fast 1-D Convolution (full shape)
This is the first problem in the <http://www.mathworks.com/matlabcentral/cody/?term=Fast+1-D+Convolution fast 1-D convolution se...

9 jours il y a

A résolu


Orthogonalize 3 column vectors using the Gram-Schmidt process
Use the Gram-Schmidt process to orthogonalize three linearly independent column vectors. Return three output column vectors that...

12 jours il y a

A résolu


Orthogonalize a 2x2 matrix using the Gram-Schmidt process
Use the Gram-Schmidt process to orthogonalize two linearly independent column vectors. Return two output column vectors that are...

12 jours il y a

Problème


Express numbers as the sum of a prime, a square, and a cube
While traveling on an interstate highway, I noticed a sign that gave distances to three places. The distances were 3, 8, and 9 m...

12 jours il y a | 2 | 4 solveurs

Problème


Solve an ODE: Ekman spiral on a solid surface
Problem Write a function to solve for and as a function of in this system of ordinary differential equations: where , ...

18 jours il y a | 2 | 2 solveurs

Problème


Find the minimum element coprime to the rest in a set of 10 consecutive integers
In this video, Dr Barker argued that a set of 10 consecutive integers must have at least one integer coprime to the rest. For ex...

18 jours il y a | 1 | 5 solveurs

A résolu


Write a code to implement the improved Euler's method to integrate a simple function
Euler's method approximates the solution to a differential equation as where . It's possible to improve on Euler's method by ...

25 jours il y a

A résolu


Write a code to implement Euler's method to integrate a simple function
Euler's method approximates the solution to a differential equation as where . The challenge is to write a code that can take...

25 jours il y a

A résolu


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...

environ un mois il y a

A résolu


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.

environ un mois il y a

Problème


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

environ un mois il y a | 1 | 5 solveurs

A résolu


Swap between rows
The idea is to swap between second and second last row Ex = [1 2 3 4 5; 5 4 3 2 1; 1 2 3 4 5; 1 2 3 4 5; ...

environ 2 mois il y a

A résolu


Swap between first and last column
The idea is to swap between first and last column Ex = [1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 ...

environ 2 mois il y a

A résolu


Swap between first and last
The idea is to swap between first and last row Ex = [1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; ...

environ 2 mois il y a

A résolu


Remove a specific character with another
Remove any (-) dash sign with (_) underscore Ex = 'The-Journey-of-thoudsands-miles-starts-with-a-single-step' y = 'The_Jour...

environ 2 mois il y a

A résolu


Swap between columns
The idea is to swap between second and second last column Ex = [1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; ...

environ 2 mois il y a

A résolu


Hamiltonian Cycle
This is related to the Travelling Salesman Problem 1339 created by Alex P. A Hamiltonian cycle or traceable cycle is a path tha...

environ 2 mois il y a

A résolu


Langston's Ant
The <http://en.wikipedia.org/wiki/Langton%27s_ant Langston's Ant> Challenge is to determine the number of Black squares after K ...

environ 2 mois il y a

A résolu


Remove a specific column with min value
Remove the column that contain the min value in the matrix?

2 mois il y a

A résolu


Remove a specific column with max value
Remove the column that contain the max value in the matrix?

2 mois il y a

A résolu


Remove a specific row with min value
Remove the row that contain the min value in the matrix?

2 mois il y a

A résolu


Remove a specific row with max value
Remove the row that contain the max value in the matrix?

2 mois il y a

Problème


List ways to make a sum in Killer Sudoku
In Sudoku, the subject of several Cody problems, one tries to arrange the digits 1 through 9 in a 9x9 grid (of nine 3x3 boxes) s...

2 mois il y a | 1 | 3 solveurs

Problème


Compute a sum involving the zeta function
Write a function to compute the sum for , where is the zeta function, the subject of Cody Problems 45939, 45988, and 45997.

2 mois il y a | 0 | 3 solveurs

A résolu


Getting values from a vector
This exercise is for finding the values that meet your criteria. a = [-5 28 7 83 73]; b = 23 ; c = (a > b) Then : c = ...

2 mois il y a

A résolu


Evaluate Poker Hand
Given an input table of card values and card suits between five and thirteen cards, choose the best five cards and output the ra...

3 mois il y a

A résolu


Find Rows with Specift Properities
Delete rows with specific properites as following: Find rows that have a negative value in any element of the row and delete it...

3 mois il y a

A résolu


Summation of Non Zeros Numbers in String Variable
Find the Summation of Non Zeros Numbers in String Variable The input : x = '100205' The Output : y = 8

3 mois il y a

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