Dinh Tuan

Last seen: 12 meses hace | Con actividad desde 2023

Followers: 0 Following: 0

Estadísticas

Feeds

Resuelto

Project Euler: Problem 7, Nth prime
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the Nth prime numb...

12 meses hace

Resuelto

Number of Even Elements in Fibonacci Sequence
Find how many even Fibonacci numbers are available in the first d numbers. Consider the following first 14 numbers 1 1 2...

12 meses hace

Resuelto

(Linear) Recurrence Equations - Generalised Fibonacci-like sequences
This problem is inspired by problems <http://uk.mathworks.com/matlabcentral/cody/problems/2187-generalized-fibonacci 2187>, <htt...

12 meses hace

Resuelto

Removing rows from a matrix is easy - but what about inserting rows?
Assume A is a 5-by-5 matrix. A([2,4],:) = [] is a quick way to remove rows 2 and 4. Can you find a quick way to insert rows into...

12 meses hace

Resuelto

Make an awesome ramp for a tiny motorcycle stuntman
Okay, given a vector, say v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 3 6 9 11 0; 6 9 ...

12 meses hace

Resuelto

Find the next prime number
Find the next prime number or numbers for given n. For example: n = 1; out = 2; or n = [5 7]; out = [7 11]; ...

12 meses hace

Resuelto

Make a vector of prime numbers
Input(n) - length of vector with prime numbers Output(v) - vector of prime numbers Example: * n=1; v=2 * n=3; v=[2 3 5...

12 meses hace

Resuelto

Largest Twin Primes
<http://en.wikipedia.org/wiki/Twin_prime Twin primes> are primes p1, p2 = p1 + 2 such that both p1 and p2 are prime numbers. Giv...

12 meses hace

Resuelto

Mersenne Primes
A Mersenne prime is a prime number of the form M = 2^p - 1, where p is another prime number. For example, 31 is a Mersenne prim...

12 meses hace

Resuelto

Find nearest prime number less than input number
Find nearest prime number less than input number. For example: if the input number is 125, then the nearest prime number whi...

12 meses hace

Resuelto

Sophie Germain prime
In number theory, a prime number p is a *Sophie Germain prime* if 2p + 1 is also prime. For example, 23 is a Sophie Germain prim...

12 meses hace

Resuelto

Circular Primes (based on Project Euler, problem 35)
The number, 197, is called a circular prime because all rotations of the digits: 197, 971, and 719, are themselves prime. The...

12 meses hace

Resuelto

The Goldbach Conjecture
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

12 meses hace

Resuelto

Remove the air bubbles
Given a matrix a, return a matrix b in which all the zeros have "bubbled" to the top. That is, any zeros in a given column shoul...

12 meses hace

Resuelto

Choose the best fitting dominoes
You will be given a cell array of nx2 matrices. Choose one row from each matrix. These are the ordered pairs that will be placed...

12 meses hace

Resuelto

Find best placement for ordered dominoes (harder)
Given a list of ordered pairs, find the order they should be placed in a line, such that the sum of the absolute values of the d...

12 meses hace

Resuelto

Find perfect placement of non-rotating dominoes (easier)
Given a list of ordered pairs, find the order they should be placed in a line, such that the sum of the absolute values of the d...

12 meses hace

Resuelto

Rotate input square matrix 90 degrees CCW without rot90
Rotate input matrix (which will be square) 90 degrees counter-clockwise without using rot90,flipud,fliplr, or flipdim (or eval)....

12 meses hace

Resuelto

Stuff the Board
You have a stack of tiles to put onto an array-like playing board. Each tile has a number (always an integer), and the board var...

12 meses hace

Resuelto

Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

12 meses hace

Resuelto

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

12 meses hace

Resuelto

Sum of series VIII

12 meses hace

Resuelto

Sum of series
a(n) = n^2 - (n-1)^2 find the summation of the series upto n i.e. a(1)+a(2)+...+a(n)

12 meses hace

Resuelto

Sum of series VI
What is the sum of the following sequence: Σk⋅k! for k=1...n for different n?

12 meses hace

Resuelto

Sum of series V
What is the sum of the following sequence: Σk(k+1) for k=1...n for different n?

12 meses hace

Resuelto

Sum of series IV
What is the sum of the following sequence: Σ(-1)^(k+1) (2k-1)^2 for k=1...n for different n?

12 meses hace

Resuelto

Sum of series III
What is the sum of the following sequence: Σ(2k-1)^3 for k=1...n for different n?

12 meses hace

Resuelto

Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?

12 meses hace

Resuelto

Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

12 meses hace

Resuelto

Sum of series VII
What is the sum of the following sequence: Σ(km^k)/(k+m)! for k=1...n for different n and m?

12 meses hace

Cargar más

Dinh Tuan

Estadísticas

Project Euler I

Cody

Introduction to MATLAB Master

Cody

Community Group Solver

Cody

Solver

Cody

Feeds