已解决

Calculate a Damped Sinusoid
The equation of a damped sinusoid can be written as |y = A.ⅇ^(-λt)*cos(2πft)| where |A|, |λ|, and |f| ...

1 year 前

已解决

Solve a System of Linear Equations
Example: If a system of linear equations in x₁ and x₂ is: 2x₁ + x₂ = 2 x₁ - 4 x₂ = 3 Then the coefficient matrix (A) is: 2 ...

1 year 前

已解决

Find a subset that divides the vector into equal halves
Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...

1 year 前

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Sum the numbers on the main diagonal
Sum the numbers on the main diagonal of an n-by-n matrix. For input: A = [1 2 4 3 6 2 2 4 7]...

1 year 前

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Make a run-length companion vector
Given a vector x, return a vector r that indicates the run length of any value in x. Each element in r shows how many times the ...

1 year 前

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Travelling Salesman Problem (TSP)
Find a short way through given points. This is the travelling salesman problem. But the solution should be a fast and small func...

1 year 前

已解决

Hackathon: the beginnings
I am thinking of a number between 1 and 10000... can you guess what this number is? *Description* The test suite has rando...

1 year 前

已解决

How many trades represent all the profit?
Given a list of results from trades made: [1 3 -4 2 -1 2 3] We can add them up to see this series of trades made a profit ...

1 year 前

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Given a window, how many subsets of a vector sum positive
Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...

1 year 前

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Implement simple rotation cypher
If given a letter from the set: [abc...xyz] and a shift, implement a shift cypher. Example: 'abc' with a shi...

1 year 前

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Spot the outlier
All points except for one lie on a line. Which one is the outlier? Example: You are given a list of x-y pairs in a column ...

1 year 前

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Solitaire Cipher
Implement the <http://en.wikipedia.org/wiki/Solitaire_(cipher) solitaire cipher>. Since this is from Wikipedia, I am capturin...

1 year 前

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Possible American Football Scoring Combinations
With inspiration from Problem 56195. Possible Ruby Scores, given the final score for two teams in an American football game (sco...

1 year 前

问题

Possible American Football Scoring Combinations
With inspiration from Problem 56195. Possible Ruby Scores, given the final score for two teams in an American football game (sco...

1 year 前 | 0 | 5 个解题者

已解决

Possible Rugby Scores
Given a natural number s (> 4), representing a rugby team's score, return an n-by-3 matrix representing all n possible combinati...

1 year 前

已解决

Split Even Number Into Two Primes
Given an even whole number n (> 2), return a 2-element vector of primes, p, such that p(1) + p(2) = n. Fun note: technically it...

1 year 前

已解决

Determine if Input is Oddish or Evenish (Odd/Even Sum of Digits)
Given a positive integer n, determine whether n is "oddish" or "evenish" - that is, whether the sum of the digits of n is odd or...

1 year 前

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Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

1 year 前

已解决

Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

1 year 前

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Calculate the average value of the elements in the array
Calculate the average value of the elements in the array

1 year 前

已解决

Draw a '0' in a one matrix!

1 year 前

已解决

Converts numbers into characters
Converts numbers into characters

1 year 前

已解决

Find the max element of the array
Find the max element of the array

1 year 前

已解决

Double all elements in the array
Duplicate all elements in the array

1 year 前

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the average value of the elements
Calculate the average value of the elements in the array

1 year 前

已解决

to the 2 all elements
to the 2 all elements

1 year 前

已解决

calculate the length of matrix
input 1 array, calculate the length

1 year 前

已解决

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

1 year 前

已解决

Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

1 year 前

已解决

Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

1 year 前