Problem

Modified Upper Matrix Mock
Given a vector v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 0 3 6 9 11; 0 0 6 9 11; 0 0 0 9 11; 0 0 0...

9 years ago | 1 | 52 solvers

Problem

Circular Shift Me
Given a vector v=[1 3 6 9 11], circular shift them while iterating m=[1 3 6 9 11; 11 1 3 6 9; 9 11 1 3 6; 6 9 11 1 3; 3 6 9 1...

9 years ago | 1 | 59 solvers

Solved

Strangest ways to get 0
Propose your non-trivial way to get 0. Look mine's, and try to do your best!

9 years ago

Solved

Solving a quadratic equation
Given a, b and c, Return the solution of the following quadratic equation: a*x^2 + b*x + c = 0.

9 years ago

Solved

Polynomial division
Divide a polynomial u by polynomial v and return the quotients only. Example: u = x^4+3*x^3+5*x+3 v = x^2+1 Answer: ...

9 years ago

Solved

Additive persistence
Inspired by Problem 2008 created by Ziko. In mathematics, the persistence of a number is the *number of times* one must apply...

9 years ago

Solved

Accessing elements on the diagonal
Access the diagonal elements of a matrix without 'diag' function

9 years ago

Solved

square root
Find the square root (y) of an input (x).

9 years ago

Solved

Multiple if statements
Write an if-statement that subtracts 5 from outputValue if amplitudeResponse is greater than 10. Write a second if-statement tha...

9 years ago

Solved

Food safety
Assign safeTemperature with 1 if foodTemperature is less than 40 or greater than 165.

9 years ago

Solved

Check bounds
Assign inRange with 1 if userWeight is greater than 100 and less than or equal to 200.

9 years ago

Solved

Genetic markers test
Assign testResult with 1 if either geneticMarkerA is 1 or geneticMarkerB is 1. If geneticMarkerA and geneticMarkerB are both 1, ...

9 years ago

Solved

convert?
* Given a string containing a number followed by pounds or kgs, for example: * 'Billy lost 22 pounds in four weeks.' * 'Maria ...

9 years ago

Solved

Vectorizing, too easy or too hard?
Please insert a . before any ^, * or / in the string. That's it!!

9 years ago

Solved

deconvolution
* Suppose there is a vector v like [1 0 0 -1], representing polynomial coefficients. * In this example, the polynimial is 1*x^3...

9 years ago

Problem

Refresh your system of equations
Given square matrix, and solution vector, find the values of the variables Example: xyz = [1 -1 2; 0 2 5; 4 0 -3]; //x-y+2...

9 years ago | 4 | 52 solvers

Solved

System of equations
Find a solution to a system of equations represented by a |n| by |n+1| matrix. For instance, [ 2 0 4; => 2*x = 4 ...

9 years ago

Solved

Distance walked 3D
suppose you go from x-y-z coordinates [3,4,2] to [0,0,2] to [0,1,2] to [1,1,2], to [1,1,20] then you walked 25 units of distance...

9 years ago

Solved

Snakes on a plane
Given the dimensions of a 2-d plane, create a matrix where a "snake" of ones occupies the plane from top left to bottom right. ...

9 years ago

Solved

Sorting
Assume that x is an n-by-2 matrix. The aim is to return the first column of x, but sorted according to the second column. Exa...

9 years ago

Problem

N-plicate me
Modified version of duplicate and triplicate me. Repeat elements of input vector with given input n Ex: input = [1 2 3 4 5...

9 years ago | 4 | 72 solvers

Solved

Who knows the last digit of pi?
There is only one man who knows the last digit of pi, who is that man? Give the name of that man, who, by popular believe, can ...

9 years ago

Solved

Function definition: Double down.
* Complete the DoubleDown function to return twice the initialValue.

9 years ago

Solved

Computing wind chill
On a windy day, a temperature of 15 degrees may feel colder, perhaps 7 degrees. The formula below calculates the "wind chill," i...

9 years ago

Solved

Duplicate each element of a vector.
for an n-dimensional vector x, the function should return another vector 2n-dimension which each element is repeated twice. Ex...

9 years ago

Solved

Declaring a string
* Assign streetAddress with the string 1313 Mockingbird Lane.

9 years ago

Problem

Implement zero-based indexing for Matrices
Given an input vector and position (which is zero based) output the value Example: x = [1 2; 4 5] pos = [0 1] value = 5 ...

9 years ago | 9 | 86 solvers

Solved

Construct an array
* Construct an row array named observedValues with elements sensorReading1, sensorReading2, and sensorReading3.

9 years ago

Problem

Rotate matrix by -90 degrees
Rotate a Matrix by -90 degrees Example: X = 1 2 3 4 5 6 7 8 9 output = 7 4 ...

9 years ago | 9 | 191 solvers

Solved

Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...

9 years ago