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**Content Feed**

Solved

Solve an ODE: precocious pair’s porcine pursuit

In our previous encounters with Matilda and Labrun, the scintillating siblings collected candy wrappers, amused others with card...

circa 7 ore ago

Solved

Define an arithmetic sequence

Given three numbers n, a, and d, define an arithmetic sequence of n terms with a being the initial term of the sequence and d be...

1 giorno ago

Solved

Generate the Figure-Figure sequence

After discussing Scott Kim’s FIGURE-FIGURE Figure (below) in Gödel, Escher, Bach, Douglas Hofstadter introduced an integer seque...

2 giorni ago

Solved

Determine whether the input is an anagram number

In Cody Problem 44293, Mehmet OZC asks us to spell numbers as words. For example, 67 would be “sixty-seven” and 76 would be “sev...

3 giorni ago

Solved

That's not my hat!

There exists a highly secretive hat consortium. Members possess identical hats. The members are invited to a meeting. All of the...

7 giorni ago

Solved

List the Euclid numbers

Euclid proved that the number of primes is infinite with the following argument. Suppose the primes form a finite set , , . Comp...

10 giorni ago

Solved

Evaluate the Kelvin functions

The Kelvin functions ber, bei, ker, and kei are related to Bessel functions of order . When the order is not specified, the defa...

10 giorni ago

Solved

prime consecutive sums

Create a number sequence of 1 to n, such that the sums of every two consecutive numbers are all primes. E.g. if n = 5, you may ...

28 giorni ago

Solved

Fill a rectangle with 1x1 and 2x2 tiles

A 3x2 rectangle can be filled with 1x1 and 2x2 tiles in three ways: The colors merely distinguish the sizes of the tiles. A 3...

circa un mese ago

Solved

Compute a determinant

Write a function to compute the determinant of an x matrix with diagonal entries equal to an integer and other entries equal ...

circa un mese ago

Solved

Get twenty-four

Inpur four integers in 1 to 10, you may use plus, minus, multiply and divid to get 24. Note that every integer should be used on...

circa un mese ago

Solved

Palindrome Problem 1

Continued Problem 50033: A palindrome is one-thirteenth of the sum of and , where and are also palindrome. Give an example o...

circa un mese ago

Solved

Concatenate input positive integers to obtain a maximum.

Input some integers, you need to concatenate them to obtain a maximum integer. Neither use library function "perms" to list all ...

circa un mese ago

Solved

N-th Digit of all Write-Down Numbers

Write-Down Numbers are: 123456789101112131415161718192021222324252627282930... What is the N'th digit (where N is represented a...

circa un mese ago

Solved

n-th digit of write-down all numbers

Write down number as 123456789101112131415161718192021222324252627282930... what's the n-th digit? input n and get the digit.

circa un mese ago

Solved

Evaluate Poker Hand

Given an input table of card values and card suits between five and thirteen cards, choose the best five cards and output the ra...

circa 2 mesi ago

Solved

Determine Poker Hand Winner

Determine the poker hand winner from two hands of cards (each hand will contain the same number of cards between five and thirte...

circa 2 mesi ago

Solved

Draw the symbol '+'

Draw '+' in an x-by-x matrix (where x is odd and x >3) Example: x = 5 y = [0 0 1 0 0 0 0 1 0 0 1 1 1 1 1 0 ...

2 mesi ago

Solved

Determining if a Degree Sequence is Potentially a Graph

A degree sequence is a list of numbers representing the degrees of vertices in a graph. While it is difficult to tell if a graph...

2 mesi ago

Solved

Check if a matrix Diagonal is equal to its secondary diagonal

Your function should return True if the secondary diagonal is equal to diagonal, and False otherwise. Eg: M = [1 2 1 ...

3 mesi ago

Solved

Area of a regular hexagon

Given the length of a side of a regular hexagon, return its area rounded to two decimal places.

3 mesi ago

Solved

Create the Ulam spiral

Have you ever seen this wonderful spiral ? The Ulam Spiral is arranging prime numbers in a clockwise spiral starting in 0. Give...

3 mesi ago

Solved

Ramanujan's Number

About 1729 1729 is the first positive integer which can be expressed as the sum of two positive cubes in two different ways. ...

3 mesi ago

Solved

Add the number of horizontal and vertical movements to each matrix element

Given n, create a square matrix and with element (1,1) = 1, add 1 to each element for each horitizonal and vertical movement. E...

3 mesi ago

Solved

Draw 'Y'

Draw 'Y' in an x-by-x matrix (where x is odd and x >= 3) Examples: x = 3 y = [1 0 1 0 1 0 0 1 0] x = 5 y = [1...

3 mesi ago

Solved

Matrix rotation

You are given a 2D matrix of dimension [m,n] and a positive integer r. You have to rotate the matrix r times and print the resul...

3 mesi ago

Solved

Circle Division

A circle can be divided into 2 sections, by placing 2 points in arbitrary locations along its circumference and drawing a straig...

3 mesi ago

Solved

Solve an ODE: first-order linear equation

In the fall semester of [redacted], my professor for a course on ordinary differential equations said, “There are two groups of ...

3 mesi ago

Solved

Classify product/digit-sum sequences

Cody Problem 53120 involved a sequence in which a term is computed by multiplying the previous two terms and adding the digits o...

4 mesi ago

Solved

Solve an ODE: nonlinear third-order equation

Write a function to solve the ordinary differential equation on the domain with , , and either or . The input variable ord ...

4 mesi ago