Community Profile # Tim

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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...

2 dagen ago

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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...

4 dagen ago

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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...

4 dagen ago

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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 ...

23 dagen ago

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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...

25 dagen ago

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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 ...

25 dagen ago

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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...

ongeveer een maand ago

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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...

ongeveer een maand ago

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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 ...

ongeveer een maand 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...

ongeveer een maand 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.

ongeveer een maand 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...

ongeveer een maand ago

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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...

ongeveer 2 maanden ago

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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 maanden ago

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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 maanden ago

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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 ...

2 maanden ago

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

2 maanden ago

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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 maanden ago

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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 maanden ago

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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 maanden 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 maanden 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 maanden ago

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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 maanden ago

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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 maanden ago

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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...

3 maanden ago

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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 ...

3 maanden ago

Solved

Check whether a Wordle guess is consistent with previous feedback
The game Wordle resembles the classic game Mastermind. Players try to guess a five-letter word, and after each guess they are to...

3 maanden ago

Solved

You are joining the MATLAB Central platform to solve a question on Cody. The signup page requires you to input an id and a passw...

4 maanden ago

Solved

Easy Sequences 65: Fractional Part of Square Roots
The fractional part function of a positive real number , denoted as , is defined as: , where , is the 'floor' of . Thus, , and ...

4 maanden ago

Solved

Easy Sequences 64: Base-14 Arithmetic Function
For an integer , the base-14 arithmetic function, , is defined as follows: Convert to base-14, using the letters '' for digits...

4 maanden ago