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Weighted Convolution
Given two input vectors x = [x_1, x_2, ..., x_K] and y = [y_1, y_2, ..., y_K] of equal length, compute the weighted convolution ...

3 years 前

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Restricted Addition v3
This problem is <https://www.mathworks.com/matlabcentral/cody/problems/45258-restricted-addition-v2 Restricted Addition v2> with...

3 years 前

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Restricted Addition v2
This problem is Restricted Addition v1 with more restrictions. Also, you must handle negative and non-integer values. Add two n...

3 years 前

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Restricted Addition v1
Add two numbers without use of common arithmetic operations. Unfortunately, in order to enforce this restriction, other restrict...

3 years 前

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Free passes for everyone!
_Simply return the name of the coolest numerical computation software ever_ *Extra reward* (get a _freepass_): Once a mont...

3 years 前

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Pancake sorting - minimum flips.
Sort a stack of pancakes by flipping them using spatula. There are N pancakes with diameters 1:N. Spatula can be inserted anyw...

3 years 前

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Find pairs of primes with the same digit sum and a specified separation

3 years 前

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Infinite precision division
Develop a function that will divide a very very large integer numerator, supplied to function as a string (e.g., '12233344445555...

3 years 前

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Easy Sequences 40: Quadratic Congruence
Quadratic Congruence is a modular equation of the form: . In this exercise you will be given a vector containing the coefficie...

3 years 前

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Easy Sequences 16: Volume of Embedded Octahedron
An octahedron (not regular) is formed by joining the centers of the faces of a rectangular parallelepiped (see below figure). ...

3 years 前

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Cipher or Decipher the number according to the second input - 3 keys - order [1 2 3 2 1 2 3 ......]

3 years 前

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Draw 'W'
For any given n, return a matrix of height n and width 4n-3 containing a W of ones. Example: n=2 ans= [1 0 1 0 1 0 1 0 1 0...

3 years 前

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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...

3 years 前

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Travelling Salesman Problem (TSP)
Find a short way through given points. This is the travelling salesman problem. But the solution should be a fast and small func...

3 years 前

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A Simple Shielding Problem

3 years 前

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Coefficients and vertex of a parabola given 3 points
Given 3 points, each defined by x and y, compute the coefficients: [a,b,c] of a parabola with equation: y = ax^2 + bx + c passin...

3 years 前

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Global usage
This Challenge is to utilize Global variables. Global variables are risky as the subroutine may inadvertently and unwantingly...

3 years 前

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Compute a row of the Kimberling shuffle

3 years 前

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Get the n-th rand number with given seed
Given seed s, return the n-th rand number using rand(). Round the answer with 4 digits. n is a postive integer.

3 years 前

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Compute expulsions from the Kimberling shuffle

3 years 前

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Decimation - Optimized for speed
This problem is similar to http://www.mathworks.com/matlabcentral/cody/problems/1092-decimation, only this time the score will b...

3 years 前

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Solve a Weird Calculator puzzle
The September 2012 issue of GAMES Magazine had a Weird Calculator puzzle by Erich Friedman. In this puzzle, the calculator has o...

3 years 前

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Vector indexing: lower than mean
Find all values in a vector lower than the mean of the vector

3 years 前

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Easy Sequences 25: Product of Series
The function 'P(n)' is defined as the series product: where 'T(n)' is the triangular sum: ...

3 years 前

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Easy Sequences 31: N-N's Sequence
We define the N-N's Sequence, as the series of all positive integers in ascending order and with repetition, wherein any number ...

3 years 前

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Compute a sum involving the totient over divisors of a number
Write a function to compute the following sum: where is the totient function. The sum is computed over the divisors of (inc...

3 years 前

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find the mean of all elements in a matrix
given a matrix, just find the mean of all elements in the matrix

3 years 前

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Investigate the frequency of last digits of prime numbers
The last digit of a prime number greater than 5 can be 1, 3, 7, or 9. If the primes are distributed randomly, then these digits ...

3 years 前

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Easy Sequences 42: Areas of Non-constructible Polygons
A constructible polygon is a regular polygon that can be constructed using only a compass and a straightedge. Amazingly, Gauss ...

3 years 前

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Easy Sequences 12: 50th Prime
Write a function that outputs the th prime after a given number . For example, the th prime after is . NOTE: If itself is pr...

3 years 前