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Ulam primes first formula
Historical context The polish-american mathematician Stanislaw Ulam found the formula to give the first 760 prime numbers ...

1 year ago

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Ulam primes second formula
Historical context The polish-american mathematician Stanislaw Ulam found the formula to give some prime numbers not given...

1 year ago

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Euler primes
Historical context The great swiss mathematician Leonhard Euler found the formula to give some prime numbers. Problem...

1 year ago

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Primes numbers which are the difference of two consecutive cubes
Problem statement Given a positive integer n greater than 2, find the prime numbers less or equal to n and which are the diff...

1 year ago

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Find the first occurence of a given gap between two consecutive prime numbers
Given a gap = p' - p between the two consecutive prime numbers p and p', find its first occurence, f. For examples : If , f=...

1 year ago

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Frequencies of prime gaps
Given two positive integers n and , write a function which computes the frequency of the gap between two consecutive of the pr...

1 year ago

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Breaking up a chocolate bar
You've got a chocolate bar of size , and you want to break it up into bite-sized () pieces. How many steps are required to do th...

1 year ago

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The cake is a lie...
You're hosting a birthday party with a large number of screaming children. Fortunately, you have a gigantic sheet cake in front...

1 year ago

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Dominant Matrix - 02
It is a follow-up of the problem 55995. There, you found out whether a matrix is diagonally dominant or not. In this problem, y...

1 year ago

Problem

Classify triangles as acute, obtuse, or right
In an acute triangle, the three interior angles are acute, or smaller than 90 degrees. In an obtuse triangle, one angle is obtus...

1 year ago | 0 | 11 solvers

Problem

Compute the antisigma function
The sum of divisors function, or , is the sum of the numbers that divide . The antisigma function is the sum of numbers less tha...

1 year ago | 0 | 10 solvers

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Symmetric Pair
Given an (n, 2) matrix, remove any symmetric pairs from the matrix. Keep the first occurrence. (2, 3) and (3, 2) are considere...

1 year ago

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Pairs with Given Sum
Given an array of integers and a target sum, return all unique pairs whose sum is equal to the target. The output should be a ma...

1 year ago

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Last Duplicate
Given an array of integers, find the last duplicate element — that is, the element whose second occurrence appears latest in the...

1 year ago

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First Duplicate
Given an array of integers, return the first duplicate — i.e., the element that appears more than once and whose second appearan...

1 year ago

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Most Frequent Characters
Given a document file or a character array, identify the 'n' most frequently occurring characters and the number of times each a...

1 year ago

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Juros Simples
Faça uma função que calcule o montagem de um investimento com juros simples que receba como argumentos o capital inicial C, a ta...

1 year ago

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Greater than before
Given an array of integers, write a function that returns elements that are greater than the one before them. For instance, ...

1 year ago

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Unique rows
A matrix is given as the input. Remove any duplicate rows from the matrix. keep the first occurrence.

1 year ago

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'X'avier
Given a square matrix A of size n, write a function to create a new matrix B where only the elements on the main diagonal and th...

1 year ago

Problem

Intersect three sequences
Most numbers have interesting properties, if you look hard enough and interpret “interesting” liberally. Let’s choose a number a...

1 year ago | 0 | 3 solvers

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Subtraction
Given two numbers a and b subtract them

1 year ago

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Multiplication
Given 2 numbers a and b mulitply them

1 year ago

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Division
Given two numbers a and b divide them a/b

1 year ago

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Remainder
Given two number a and b find the remainder when you divide a by b

1 year ago

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Find the mean
Find the mean of a given sdet of numbers in a vector x

1 year ago

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Mode
Find the mode of a vector x

1 year ago

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sum numbers to some value n
sum of numbers up to a value n

1 year ago

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add num
add two numbers a and b

1 year ago

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minecraft movie scramble
the following phrase "la la la lava ch ch ch chicken" will be out of order. make it into the correct order

1 year ago