ChrisR
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I teach courses in water resources and environmental fluid mechanics.
MATLAB
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273 Problemas
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Feeds
Problema
Explore the twin prime Goldbach conjecture
The Goldbach conjecture says that every positive even integer greater than 2 can be expressed as the sum of two prime numbers in...
9 días hace | 2 | 5 solvers
Resuelto
The Prime Days of Christmas
On the first day of Christmas my true love sent to me partridges in a pear tree. On the second day of Christmas my true love s...
alrededor de 1 mes hace
Resuelto
Conditional transpose II
As in problem 60734, you're given two vectors, x and y, which might be row or a column vectors. Your task is to ensure that y ha...
alrededor de 1 mes hace
Resuelto
Conditional transpose
You're given two vectors of the same length, x and y, which might be row or a column vectors. Your task is to ensure that y has ...
alrededor de 1 mes hace
Resuelto
Delete some elements in the natural set and find the sum of the first n terms
Delete the number (except 0,1) with a complete square number from the natural set of numbers, form a new set of numbers, find th...
alrededor de 1 mes hace
Resuelto
Wheatstone bridge
Determine if a set of resistors maintain Wheatstone bridge equilibrium
alrededor de 1 mes hace
Resuelto
Organic Chemistry
Determine the names of the organic component formed with carbon and hydrogen. For example, if n=1 the name is methane
alrededor de 1 mes hace
Problema
Find the closest geyser prime
My wife and I celebrated our honeymoon and our recent anniversary in Yellowstone and Grand Teton National Parks. After returning...
alrededor de 1 mes hace | 1 | 6 solvers
Problema
Remove the diagonal of a square matrix
Some Cody problems ask solvers to remove columns (e.g., 7), and others ask solvers to remove rows (e.g., 44033). Write a funct...
alrededor de 1 mes hace | 0 | 8 solvers
Resuelto
Convert RGB to Grayscale
Convert a 3 element RGB array to its correspoding grayscale pixel (a scalar) *Hint: a formula exists!
alrededor de 2 meses hace
Resuelto
Palindrome Checker
Check to see if a given string is a palindrome (a word, phrase, or sequence that reads the same backward as forward). Output sh...
alrededor de 2 meses hace
Resuelto
Reverse a string
Return a string with the characters in reverse order from a given input string Ex: my_str = "Ciao" function should output "...
alrededor de 2 meses hace
Resuelto
Sum All Positive Elements
Output a scalar that is equal to the sum of all positive elements in a given vector/matrix. For Example: The sum of all positi...
alrededor de 2 meses hace
Resuelto
Diagonal Product of A Square Matrix
For a matrix A, calculate the product of its diagonal elements. * Assume all input matrices are square & corresponding element...
alrededor de 2 meses hace
Problema
Sum the reciprocals of polygonal numbers
As explained in Cody Problem 60571, a polygonal number is the number of dots arranged in the shape of a regular polygon. For exa...
3 meses hace | 0 | 4 solvers
Resuelto
Determine which fields have been modified in a structure
Given two input structures (s1, s2), determine which field values have been modified in s2 compared to s1. Your output should be...
3 meses hace
Resuelto
ICFP2024 001: Lambdaman 6
The ICFP2024 contest was held June29 thru July 1. The contest consisted of five parts: ICFP Language, Lambdaman maze, Starship f...
3 meses hace
Resuelto
ZigZag - 04
Given a matrix, print all its elements in the spiral form (clockwise direction). For example, a=[16 2 3 13 ...
3 meses hace
Problema
List primes of the form xy+z
Consider three consecutive integers , , and . When is the number prime? For example, if or , then the results are 17 and 37, ...
3 meses hace | 0 | 7 solvers
Resuelto
Interval Compression
Given a set of integers, the task is to create a list of closed intervals where each interval includes its endpoints. For exampl...
3 meses hace
Resuelto
Perimeter of a Koch snowflake
A Koch snowflake is an iteratively generated (fractal) shape built out of successively smaller equilateral triangles by followin...
3 meses hace
Resuelto
AZPC Oddly Triangular: Small N Part 1 of 5
AZPC created the Oddly Triangular contest on 9/7/22. The challenge is to find the longest sequence of N odd digits such that sum...
3 meses hace
Problema
Find polygonal numbers that are Blum integers
A polygonal number is the number of dots arranged in the shape of a regular polygon. For example, 15 is a triangular number beca...
3 meses hace | 0 | 6 solvers
Resuelto
Given a Polyshape_01 (ps) Return its Perimeter, Area, and Centroid.
Return the perimeter (P) of a polyshape object, which is the sum of the lengths of its boundaries. Return the total area (A) of...
3 meses hace
Problema
Determine whether a number is a Blum integer
A Blum integer is a semiprime—that is, the product of two distinct primes—whose factors have the form for some integer . The nu...
3 meses hace | 0 | 7 solvers
Resuelto
Jigsaw 001: Intro 2x2 square. Pieces 128x128
This challenge is to re-assemble camerman.tif in grayscale from four 128x128 pieces into a 256x256 image. The pointer layou...
4 meses hace
Problema
Compute the number of squares a knight can reach after n moves
Several Cody problems involve knights from chess. They have asked players to find a knight’s tour in a matrix (CP 96), determine...
4 meses hace | 0 | 6 solvers
Resuelto
Write a MATLAB function that takes a positive integer ( n ) as input and returns the sum of all the even numbers from 1 to ( n ).
Write a MATLAB function that takes a positive integer ( n ) as input and returns the sum of all the even numbers from 1 to ( n )...
4 meses hace
Resuelto
Implement the signum function
The signum function is a common mathematical function, which has the following definition : If x => 0, its value is 1, if x < 0...
4 meses hace
Resuelto
Generate a point cloud on an equilateral triangle 1
The input is the iteration parameter H. The output is a point cloud W involving N points. W is N uniformly distributed points ...
4 meses hace