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Pernicious Anniversary Problem
Since Cody is 5 years old, it's pernicious. A <http://rosettacode.org/wiki/Pernicious_numbers Pernicious number> is an integer w...

8 years ago

Solved

Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Submit your answer to this problem a multiple of 5 seconds after the hour. Your answer is irrelevant; the only thing that matte...

8 years ago

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Is this is a Tic Tac Toe X Win?
For the game of <https://en.wikipedia.org/wiki/Tic-tac-toe Tic Tac Toe> we will be storing the state of the game in a matrix M. ...

8 years ago

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ASCII Birthday Cake
Given an age and a name, give draw an ASCII birthday cake. For example, given the name "CODY" and the age 5, return a string wit...

8 years ago

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Energy of a photon
Given the frequency F of a photon in giga hertz. Find energy E of this photon in giga electron volts. Assume h, Planck's ...

8 years ago

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The 5th Root
Write a function to find the 5th root of a number. It sounds easy, but the typical functions are not allowed (see the test su...

8 years ago

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How to subtract?
* Imagine you need to subtract a few numbers using MATLAB. * You will not be using eval for this task. * Given two ASCII strin...

8 years ago

Solved

Use R2016b Text Manipulations to Fix These Addresses (Part 1)
We have a series of addresses like the following which we'd like to reformat. Can you remove the latitude and longitude from the...

9 years ago

Solved

Combine the first and last names
MATLAB R2016 provides a rich set of functions to work with string arrays. In this problem, you will be given two string arrays o...

9 years ago

Solved

Billiards
Considering there are 15 pool balls, (b), in the game of pool, and given a radius, (r). What is the volume, (V), of a rack in th...

9 years ago

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Hardy-Ramanujan number
Find the first Hardy-Ramanujan number.

9 years ago

Solved

Kaprekar Steps
6174 is the <http://en.wikipedia.org/wiki/6174_%28number%29 Kaprekar constant>. All natural numbers less than 10,000 (except som...

9 years ago

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Square of the sum of optimus
Get the square of the sum of all primes given the limit input x

9 years ago

Solved

Get 1-4-3-4-4
Get the value of the indices in the title and assign it to an array

9 years ago

Solved

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

Solved

Rotate array 90 degrees
Rotate the given matrix by 90 degrees. Example, A = [1 2 3 ; 4 5 6 ] B = rotated(A) = [ 3 6; 2 5; 1 4 ]

9 years ago

Solved

Factorial Numbers
Factorial is multiplication of integers. So factorial of 6 is 720 = 1 * 2 * 3 * 4* 5 *6 Thus 6 factorial = factorial(720)....

9 years ago

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What do you get if you multiply six by nine?
The Hitchhiker's Guide to the Galaxy based task. Tip: n-base numeral system

9 years ago

Solved

The Answer to Life, the Universe, and Everything
A variation of a previous Hitchhiker's Guide to the Galaxy problem. *Inputs:* Life, the Universe, and Everything *Output:*...

9 years ago

Solved

First N Perfect Squares
*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];

9 years ago

Solved

Side of an equilateral triangle
If an equilateral triangle has area A, then what is the length of each of its sides, x? <<http://upload.wikimedia.org/wikipe...

9 years ago

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Say something funny
Say something funny, or not. Your solution will be (fully automatically and objectively) scored based on how clever or funny ...

9 years ago

Solved

cross in array
Make a cross from "1" in odd size array. Other value from array should be equal to "0"; As input you get length of side of arra...

9 years ago

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Array of Ones
Create a 100 X 100 array of ones.

9 years ago

Solved

Create incrementing array
Given a and b generate an output matrix as shown in following examples: a=2 b=5 output=[2 20 200 2000 20000] a=4 b...

9 years ago

Solved

Solve the following system of equations.
x-2y+3z=a 2x+y+z=4 -3x+2y-2z=-10

9 years ago

Solved

Calculate the centroid of a triangle
Info: https://en.wikipedia.org/wiki/Centroid Example Input: x = [0 0 1]; % x-coordinate y = [0 1 0]; % y-coordinat...

9 years ago

Solved

Summation of array
Given an array, Find the sum of all of the elements in it Examples: Input x = [1 2 3 5; 4 5 6 7]; Output y is 33

9 years ago

Solved

Create matrix of replicated elements
Given an input element x, and the dimensions, (m, n) return a matrix of size m x n filled with element x. Example: Input: ...

9 years ago

Solved

Make a 1 hot vector
Make a vector of length _N_ that consists of all zeros except at index _k_, where it has the value 1. Example: Input ...

9 years ago