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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...

9 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...

9 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. ...

9 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...

9 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 ...

9 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...

9 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...

9 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...

10 years ago

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

10 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...

10 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

10 years ago

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

10 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 ...

10 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 ]

10 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)....

10 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

10 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:*...

10 years ago

Solved

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

10 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...

10 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 ...

10 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...

10 years ago

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

10 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...

10 years ago

Solved

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

10 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...

10 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

10 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: ...

10 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 ...

10 years ago