ChrisR

Last seen: ein Tag ago | Active since 2015

I teach courses in water resources and environmental fluid mechanics.

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How to multiply?
* Imagine you are in 3012 Anno Domini, when everyone must learn how to multiply, * and competing for the highly prestigious pos...

etwa 6 Stunden ago

Solved

Easy Sequences 18: Set Bits of Triple Summations
The function S(n) is defined by the following triple summations: The double brackets mean that th...

etwa 19 Stunden ago

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Create the flag of Ramumbia
The little known nation of Ramumbia has a very simple flag. It is made up of vertical stripes, Red, Green, Blue, that are equall...

etwa 19 Stunden ago

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Palindromic Prime
Palindromic Prime is a prime number that is also a palindromic number. (Wiki, OEIS) If given a monotonic series (increment=1) ...

ein Tag ago

Problem

Multiply binary numbers
Write a function to multiply two binary numbers input as strings. For example, input values of ‘1011’ and ‘101’ should give ’110...

2 Tage ago | 1 | 3 solvers

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UICBioE240 problem 1.11
Store a series of numbers into a 4 by 4 matrix, starting with the first few positions going right and down, and leaving the rest...

2 Tage ago

Solved

The perimeter of a circle
Calculate the perimeter of a circle E.g If input r(radius) = 2 , the output( the perimeter of a circle) = 12.5664.

3 Tage ago

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Relation between functions "dec2bin" & "dec2binvec"
Here it's an easy problem we try to find the relation between the two functions "dec2bin" & "dec2binvec", so here you must write...

4 Tage ago

Solved

Free points!
Products of all elements in x. eg. x = [1 2 3 4 5]; y = 120;

4 Tage ago

Solved

Basic Monte Carlo Simulation
Input is a matrix including service time and probability of service time. Another input is a random number. Function should tran...

5 Tage ago

Solved

Easy Sequences 9: Faithful Pairs
A "faithful number" is a non-prime number that is one less or one more than some prime number but not both. For example, for num...

5 Tage ago

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Bisection method of finding a root.
Test the bisection algorithm described in Chapter 5 of Steven C. Chapra's textbook, *Applied Numerical Methods with MATLAB for E...

6 Tage ago

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False position (linear interpolation) method of finding a root.
Test the false position algorithm described in Chapter 5 of Steven C. Chapra's textbook, *Applied Numerical Methods with MATLAB ...

6 Tage ago

Solved

Temperature Conversion Utility (Strings)
This is a follow-on problem to <http://www.mathworks.com/matlabcentral/cody/problems/2413-temperature-conversion-utility Problem...

9 Tage ago

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Matrix to 3-Column Matrix
Consider a matrix *A* such as A = [1 2 3 3 4 5 6; 2 3 4 5 6 7 8]; Can you convert this matrix to a three-column ...

10 Tage ago

Solved

Moving Product (Easy)
Given an input array A, write a function *movprod(A,k,dim)* to calculate the moving product over a sliding window of length *k* ...

10 Tage ago

Solved

Vogel-Dobbener entropy
*Vogel-Dobbener entropy* is a measure of dispersion for ordinal variables. Given an ordered list of distinct observations u_...

10 Tage ago

Solved

Cody Problems in French : Trouvez la logique Pt.1
On rentre x = 4 et il en sort y = 160. Trouvez la logique entre x et y, aidez-vous de la test suite. Bon courage. P.S: L'...

11 Tage ago

Solved

Cody problems in French : Trouvez la logique Pt.2
Trouvez la logique entre x et y, aidez-vous de la test suite. Bon courage. P.S: L'utilisation de "^" est de nouveau fortement...

11 Tage ago

Solved

Find the complement of a number in binary
Input x is a decimal number and output y is the complement of binary representation of x. For example, x = 10 has the binary ...

11 Tage ago

Problem

Count the primes in Collatz sequences
Several Cody problems (21, 69, 42937, 44448, 44784, 52422) involve Collatz sequences. These start with a seed . If is odd, the ...

11 Tage ago | 1 | 5 solvers

Solved

Create array of all Distances between two Sets of Points
This Challenge is a subsection of Martian Pranks based on Tim's efficient Distance calculation between sets of points. Given Po...

11 Tage ago

Solved

Filter British English into American English
Given a sentence written with British spelling, return the sentence with the offending word(s) replaced with the American spelli...

12 Tage ago

Solved

What is the nth step in Conway's Life?
Based on <Problem 52. What is the next step in Conway's Life?> Generalize your solution to Problem 52 - Give the state of the...

12 Tage ago

Solved

Find the first N zeros of the 666 function
Using the following definition of the 666 function for this problem: _f(n)=sin('nnn')-cos(n*n*n)_, write a function that returns...

12 Tage ago

Solved

Easy Sequences 13: Average Speed of Spaceship
A certain alien spaceship is capable of traveling at extremely high velocities and is able to change speed instantaneously. The ...

12 Tage ago

Problem

List the Moran numbers
The quotient of a Moran number and its digit sum is prime. For example, 117 and 481 are Moran numbers because 117/(1+1+7) is 13 ...

12 Tage ago | 3 | 6 solvers

Solved

Convert Cylindrical Cooridinates into Spherical Coordinate

14 Tage ago

Solved

Find the coefficients for numerical integration using Simpson's rule
For using numerical integration using Simpson's rule, we need some coefficients to be determined first. Suppose the n is the nu...

15 Tage ago

Solved

Visualization of experimental data across a surface
Assume that you have taken data across the surface of a sample, for example sheet resistance. The data is stored in a Nx3 matri...

16 Tage ago