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Last seen: 12 mesi fa |  Attivo dal 2023

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

12 mesi fa

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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 mesi fa

Risolto


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

12 mesi fa

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

12 mesi fa

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

12 mesi fa

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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 mesi fa

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Sum of series VIII

12 mesi fa

Risolto


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...

12 mesi fa

Risolto


Remove NaN ?
input -> matrix (n*m) with at least one element equal to NaN; output -> matrix(p*m), the same matrix where we deleted the enti...

12 mesi fa

Risolto


Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

12 mesi fa

Risolto


Number of 1s in a binary string
Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

12 mesi fa

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Magic is simple (for beginners)
Determine for a magic square of order n, the magic sum m. For example m=15 for a magic square of order 3.

12 mesi fa

Risolto


Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

12 mesi fa

Risolto


Back to basics 21 - Matrix replicating
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

12 mesi fa

Risolto


Return the first and last characters of a character array
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

12 mesi fa

Risolto


Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

12 mesi fa

Risolto


Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

12 mesi fa

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Create a vector
Create a vector from 0 to n by intervals of 2.

12 mesi fa

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Flip the vector from right to left
Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

12 mesi fa

Risolto


Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

12 mesi fa

Risolto


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 mesi fa

Risolto


Find max
Find the maximum value of a given vector or matrix.

12 mesi fa

Risolto


Get the length of a given vector
Given a vector x, the output y should equal the length of x.

12 mesi fa

Risolto


Project Euler: Problem 5, Smallest multiple
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smalle...

12 mesi fa

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Inner product of two vectors
Find the inner product of two vectors.

12 mesi fa

Risolto


Rotate and display numbered tile
Imagine a square tile with four numbers on it, one on each edge. We will call these edges north, east, south, and west. If th...

12 mesi fa

Risolto


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...

12 mesi fa

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Triangle sequence
A sequence of triangles is constructed in the following way: 1) the first triangle is Pythagoras' 3-4-5 triangle 2) the second...

12 mesi fa

Risolto


How many Fibonacci numbers?
Find the number of unique Fibonacci numbers (don't count repeats) in a vector of positive integers. Example: x = [1 2 3 4...

12 mesi fa

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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 mesi fa

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