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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, ...

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Perimeter of a Koch snowflake
A Koch snowflake is an iteratively generated (fractal) shape built out of successively smaller equilateral triangles by followin...

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Jigsaw 002: Intro 2x2 square. Local Cody images
This challenge is to re-assemble camerman.tif and other grayscale images from four 128x128 pieces into a 256x256 image. The prop...

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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...

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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...

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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...

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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.

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Generate a point cloud on an equilateral triangle 6
The input is the iteration parameter H. The output is a point cloud W involving N points. W is N uniformly distributed points ...

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Generate a point cloud named `Simplex-Lattice Design`
The input is the number of dimensions M and the parameter H. The output is a point cloud W involving N points. W is N uniforml...

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Calculate the Area of the Ring
You have Ring which consist of inner and outer Circles with Radius r and R which are not given but you'll be given Hprizontal ...

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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...

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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...

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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 )...

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Generate a point cloud on an equilateral triangle 5
The input is the iteration parameter H. The output is a point cloud W involving N points. W is N uniformly distributed points ...

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Generate a point cloud on an equilateral triangle 3
The input is the iteration parameter H. The output is a point cloud W involving N points. W is N uniformly distributed points ...

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Compute Farey sequences
Problem statement The Farey sequence of order consists of fractions between 0 and 1 expressed in reduced form in increasing or...

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Generate a point cloud on an equilateral triangle 4
The input is the iteration parameter H. The output is a point cloud W involving N points. W is N uniformly distributed points ...

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Generate a point cloud on an equilateral triangle 7
The input is the iteration parameter H. The output is a point cloud W involving N points. W is N uniformly distributed points ...

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Generate a point cloud on an equilateral triangle 8
The input is the iteration parameter H. The output is a point cloud W involving N points. W is N uniformly distributed points ...

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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...

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Compute the totient summatory function
Cody Problem 656 deals with the totient function, denoted by which counts the numbers less than that are relatively prime to ....

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ICFP 2024 Programming Contest June 28 thru July 1
This is to announce the annual ICFP programming contest for 2024. The ICFP 2024 homepage link is ICFP 2024 . Registration will...

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Pronounce digits
Given a number num, select the first d decimal places and pronounce the digits (in English). The function returns the pronunciat...

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Generate a point cloud on an equilateral triangle 2
The input is the iteration parameter H. The output is a point cloud W involving N points. W is N uniformly distributed points ...

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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 ...

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Remove Adjacent Pairs
Given an array of integers where adjacent elements may be identical, your task is to remove these adjacent pairs. If removing on...

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Compute a sum
Write a function to compute the following sum Although a solution is available for general values of the coefficients, the co...

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switch base
Input an integer, switch its base. Input is a string, so is output.

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Calculating the Union Area of Overlapping Rectangles
Calculate the area covered by a union of multiple rectangles. Each rectangle is represented by 4 integers: the first two integer...

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Reversing Maximal Ascending Subsequences
Create and return a new array that contains the same elements as the input array, but with the elements within each strictly inc...

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