# GeeTwo

Proud father, underwater acoustician, FIRST robotics volunteer, once and future FIRST mentor

**Programming Languages:**

C++, C, Java, Javascript, MATLAB, SQL, HTML, CSS, Arduino, Shell, Assembly, Fortran

**Spoken Languages:**

English

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**Content Feed**

Solved

Easy Sequences 4: Eliminate the Days of Confusion

If a date is written in purely numeric format some dates can be confusing, if we don't know the date format used. For example, "...

5 dagar ago

Solved

Easy Sequences 3: Prime 44-number Squares

The positive integers 62 and 238 are related. Their squares (3844 and 56,644) both end in '44'. In fact, 62 and 238 are the 3rd ...

5 dagar ago

Solved

Easy Sequences 2: Trigonometric function with integral input and output

The function 'F', defined as: , will always return an integer if the input is a natural number (in radian...

6 dagar ago

Solved

Easy Sequences 1: Find the index of an element

The nth element of a series is defined by: . Obviously, the first element . Given the nth element , find the value of the corre...

6 dagar ago

Solved

Optimum Egyptian Fractions

Following problem was inspired by <http://www.mathworks.com/matlabcentral/cody/problems/2126-split-bread-like-the-pharaohs-egypt...

10 dagar ago

Solved

Determine whether a number is practical

A number is practical if all smaller numbers can be written as a sum of the proper divisors of . The number 24 is practical bec...

17 dagar ago

Solved

How many days does the cat take to climb out of the hole?

A cat accidentally falls down a hole with sloping but rough sides. It can climb out of the hole of height h metres, but for ever...

20 dagar ago

Solved

Tribute to Ramanujan

The nth taxicab number, denoted as T(n), is defined as the smallest number that can be expressed as a sum of two positive algebr...

21 dagar ago

Solved

Largest Geometric Series

Extension of Ned Gulley's wonderful Problem 317. In a geometric series, ratio of adjacent elements is always a constant value. ...

21 dagar ago

Removing duplicate rows (not "unique")

%Here's a much cleaner way to do it with 2019a or later! [B,BG]=groupcounts(A); A_reduced=BG(B==1); % or just A if you want th...

ungefär 2 månader ago | 0

Solved

Leftovers? Again?!

I am thinking of a positive number X. To determine what number I am thinking of, I will give you two 1xN vectors. The first ve...

ungefär 2 månader ago

Solved

Prime Ladders

A <http://en.wikipedia.org/wiki/Word_ladder word ladder> transforms one word to another by means of single-letter mutations. So ...

ungefär 2 månader ago

Solved

Factorions: Numbers that equal the sum of the factorials of their digits

From Wikipedia: _A factorion is a natural number that equals the sum of the factorials of its decimal digits_ For example: ...

ungefär 2 månader ago

Solved

Dudeney Numbers: Numbers which are the cube of their decimal sum

From Wikipedia: _A Dudeney number is a positive integer that is a perfect cube such that the sum of its decimal digits is equa...

ungefär 2 månader ago

Solved

Pandigital Factors (Based on Euler 491)

A Pandigital Number is a number containing all of the digits from 0-9 inclusive, with the added stipulation that it does not hav...

ungefär 2 månader ago

Solved

Pandigital number n°3 (Inspired by Project Euler 32)

After Problem 2319 and 2320. An n-digit number is pandigital if it makes use of all the digits 1 to n exactly ONCE. For examp...

ungefär 2 månader ago

Solved

Pandigital number n°2 (Inspired by Project Euler 32)

After <http://www.mathworks.com/matlabcentral/cody/problems/2319 Problem 2319>. An n-digit number is pandigital if it makes u...

ungefär 2 månader ago

Solved

Pandigital number n°1 (Inspired by Project Euler 32)

A little warm-up to begin... An n-digit number is pandigital if it makes use of all the digits 1 to n exactly ONCE. For ex...

ungefär 2 månader ago

Solved

is the number happy?

test is a given integer number is Happy of not? answer 1 if yes or 0 is no

ungefär 2 månader ago

Solved

Find all vampire fangs

A <http://en.wikipedia.org/wiki/Vampire_number vampire number> is a number v that is the product of two numbers x and y such th...

ungefär 2 månader ago

Solved

Fangs of a vampire number

A vampire number is a number v that is the product of two numbers x and y such that the following conditions are satisfied: at ...

ungefär 2 månader ago

Solved

Make a Pandiagonal Prime Magic Square: 11 x 11

This Fun with Primes Challenge is to create a Pandiagonal Prime Magic Square of size 11x11 given eleven APk sequences with 10 co...

ungefär 2 månader ago

Solved

Pandiagonal Prime Magic Square Verification

Verify if an NxN matrix is a Pandiagonal Prime Magic Square. Required properties: 1) N^2 prime values ( No repeats, 1 ...

ungefär 2 månader ago

Solved

Find the maximum number of decimal places in a set of numbers

Given a vector or matrix of values, calculate the maximum number of decimal places within the input. Trailing zeros do not coun...

ungefär 2 månader ago

Solved

Make roundn function

Make roundn function using round. x=0.55555 y=function(x,1) y=1 y=function(x,2) y=0.6 y=function(x,3) ...

ungefär 2 månader ago

Solved

Rounding off numbers to n decimals

Inspired by a mistake in one of the problems I created, I created this problem where you have to round off a floating point numb...

ungefär 2 månader ago

Solved

Matlab Basics - Rounding III

Write a script to round a large number to the nearest 10,000 e.g. x = 12,358,466,243 --> y = 12,358,470,000

ungefär 2 månader ago

Solved

Matlab Basics - Rounding II

Write a script to round a variable x to 3 decimal places: e.g. x = 2.3456 --> y = 2.346

ungefär 2 månader ago

Solved

Check that number is whole number

Check that number is whole number Say x=15, then answer is 1. x=15.2 , then answer is 0. http://en.wikipedia.org/wiki/Whole_numb...

ungefär 2 månader ago