ChrisR

Last seen: 1 día ago | Active since 2015

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I teach courses in water resources and environmental fluid mechanics.

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Thank!
. Thank all.

2 días ago

Solved

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

3 días 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...

3 días ago

Solved

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...

3 días ago

Solved

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

4 días 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...

4 días ago | 2 | 4 solvers

Solved

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...

5 días 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.

6 días 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...

7 días ago

Solved

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

7 días 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...

7 días 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...

7 días ago

Solved

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...

8 días ago

Solved

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 ...

9 días 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...

12 días 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 ...

12 días 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* ...

13 días ago

Solved

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

13 días 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'...

13 días 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...

13 días 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 ...

13 días 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 ...

14 días 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...

14 días 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...

14 días 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...

14 días 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...

14 días 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 ...

14 días 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 ...

14 días ago | 3 | 6 solvers

Solved

Convert Cylindrical Cooridinates into Spherical Coordinate

16 días 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...

18 días ago