Resuelto

Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

más de 8 años hace

Resuelto

Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

más de 8 años hace

Resuelto

Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

más de 8 años hace

Resuelto

Is my wife right?
Regardless of input, output the string 'yes'.

más de 8 años hace

Resuelto

Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

más de 8 años hace

Resuelto

Spot the First Occurrence of 5
This problem series invites you to solve two simple problems related to the integer NUMBER FIVE, in order to celebrate <https://...

más de 8 años hace

Resuelto

Project Euler: Problem 6, Natural numbers, squares and sums.
The sum of the squares of the first ten natural numbers is, 1^2 + 2^2 + ... + 10^2 = 385 The square of the sum of the first ...

más de 8 años hace

Respondida
Manipulation Rules for Special Matrice
there is many ways to do it, you can for example assign i rows, j rows in a matrix of ones; then multiply by pi x=ones(4,6)...

más de 8 años hace | 0

Resuelto

Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

más de 8 años hace

Resuelto

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

más de 8 años hace

Resuelto

Project Euler: Problem 2, Sum of even Fibonacci
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 te...

más de 8 años hace

Resuelto

Integer Sequence - II : New Fibonacci
Crack the following Integer Sequence. (Hints : It has been obtained from original Fibonacci Sequence and all the terms are also ...

más de 8 años hace

Resuelto

Fibonacci-Sum of Squares
Given the Fibonacci sequence defined by the following recursive relation, * F_n = F_(n-1) + F_(n-2) * where F_0 = 0 and F_1 ...

más de 8 años hace

Resuelto

Return the Fibonacci Sequence
Write a code which returns the Fibonacci Sequence such that the largest value in the sequence is less than the input integer N. ...

más de 8 años hace

Resuelto

Mersenne Primes vs. All Primes
A Mersenne prime (M) is a prime number of the form M = 2^p - 1, where p is another prime number. <https://www.mathworks.com/matl...

más de 8 años 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...

más de 8 años 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?

más de 8 años hace

Resuelto

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

más de 8 años hace

Resuelto

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

más de 8 años 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?

más de 8 años 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?

más de 8 años 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?

más de 8 años hace

Resuelto

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

más de 8 años hace

Resuelto

Matrix multiplication across rows
Given matrix m, return matrix n such that, rows of n are result of multiplication of the rows of the input matrix Example ...

más de 8 años hace

Resuelto

Remove entire row and column in the matrix containing the input values
Remove the entire row and column from the matrix containing specific values. The specified value can be a scalar or a vector. Fo...

más de 8 años hace

Resuelto

Replace Nonzero Numbers with 1
Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

más de 8 años hace

Resuelto

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.

más de 8 años hace

Resuelto

Given a 4x4 matrix, swap the two middle columns
If a = [1 2 3 4; 1 2 3 4; 1 2 3 4; 1 2 3 4]; then the result is ans = 1 3 2 4 1 3 2...

más de 8 años hace

Resuelto

Back to basics 23 - Triangular matrix
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, return a matrix with all elements above a...

más de 8 años hace

Resuelto

Set some matrix elements to zero
First get the maximum of each *row*, and afterwards set all the other elements to zero. For example, this matrix: 1 2 3 ...

más de 8 años hace