Problema

List primes which are the sum of two consecutive lower primes plus minus one
Problem statement Some prime numbers can be written as the sum of two consecutive lower primes plus / minus one : Like t...

7 mesi fa | 2 | 57 risolutori

Risolto

List the near-square primes, p = n² + 1 (Landau's 4th problem)
Historical context At the 1912 International Congress of Mathematicians, Edmund Landau listed four basic problems about prime...

7 mesi fa

Risolto

Calculate the volume of a cone
Calculate the volume of a cone given an array containing one column of radii and one column of the height of the cone. * Reme...

7 mesi fa

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Sum of series IX
What is the sum of the following sequence: Σ 1/k! for k=1...n for different n?

7 mesi fa

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area of an annulus
Given the diameter d of the inner circle of the annulus. Given length z of a chord of the outer circle of the annulus. This chor...

7 mesi fa

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surrounded matrix
With a given matrix A (size m x n) create a matrix B (size m+2 x n+2) so that the matrix A is surrounded by ones: A = [1 2 ...

7 mesi fa

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subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

7 mesi fa

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Spherical Volume
Calculate the volume of a sphere.

7 mesi fa

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Given a number N, find the smallest prime P>N
Given a number N, find the smallest prime P greater than N. For example: If N=10 then P=11. If N=13 then P=17.

7 mesi fa

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Create a Multiplication table matrix...
Create a product table in this format: P = [ 1 2 3 4 5; 2 4 6 8 10; 3 6 9 12 15; 4 8 12 1...

7 mesi fa

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sum of non-primes
The sum of the non-primes no larger than 10 is 1+4+6+8+9+10=38 Find the sum of all the positive non-prime integers that do no...

7 mesi fa

Problema

List the near-square primes, p = n² + 1 (Landau's 4th problem)
Historical context At the 1912 International Congress of Mathematicians, Edmund Landau listed four basic problems about prime...

7 mesi fa | 3 | 55 risolutori

Risolto

Double the next!
Given two numbers, m and n, find a matrix [m,n] where each element value is twice the value of the previous element. Starting fr...

8 mesi fa

Risolto

Create tangent function out of sine function only
Please don't use cosine and tangent functions

8 mesi fa

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Find NaNs in the matrix
Return 1s wherever there is a NaN in the input matrix

8 mesi fa

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Maximum of ND-array
Find the maximum element of a N dimensional array. Example: A=[1 2 4 ; -20 4 10]; The maximum is 10.

8 mesi fa

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Size

8 mesi fa

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Returning a "greater than" vector
Given a vector, v, return a new vector , vNew, containing only values > n. For example: v=[1 2 3 4 5 6] n=3 vNew =...

8 mesi fa

Risolto

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...

8 mesi fa

Problema

Chek the Delta = 6k gap conjecture about arithmetic progressions in the prime number set
Context In the prime numbers set there are some arithmetic progressions (sequences of three or more consecutive prime number...

8 mesi fa | 4 | 33 risolutori

Risolto

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 ...

8 mesi fa

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No Twins?
Write a function that accepts as input a vector and returns the same vector, but retaining only the first occurrence of an eleme...

8 mesi fa

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Duplicate each element of a vector.
for an n-dimensional vector x, the function should return another vector 2n-dimension which each element is repeated twice. Ex...

8 mesi fa

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Swap two numbers
Example Input: a = 10 b = 20 Output a = 20 b = 10

8 mesi fa

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Area of right triangle
Given a hypotenuse and a leg , calculate the area of right triangle.

8 mesi fa

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Find out if the given number is a square of natural number.
For example , Input =4,output =1 Input=1,output=1 Input=0,output=0 Input=8,output=0

8 mesi fa

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Area of a rectangle
FInd the area of a rectangle with a length L and width W. Round to the nearest integer.

8 mesi fa

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area of a square
find the generic solution for an area of a square

8 mesi fa

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Simple Electrical Power Calculation
Calculate the electrical power using the formula: P=V×I where: V is the voltage (in volts) I is the current (in amperes)

8 mesi fa

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Integer Division Without Remainder
Write a function that takes two positive integers, a and b, and returns the result of integer division (quotient) without remain...

8 mesi fa