解決済み

Recurring Cycle Length (Inspired by Project Euler Problem 26)
Preface: This problem is inspired by Project Euler Problem 26 and uses text from that question to explain what a recurring cycle...

1年以上前

解決済み

Project Euler: Problem 9, Pythagorean numbers
A Pythagorean triplet is a set of three natural numbers, a b c, for which, a^2 + b^2 = c^2 For example, 3^2 + 4^2 = 9 + 16 ...

1年以上前

解決済み

Lychrel Number Test (Inspired by Project Euler Problem 55)
The task for this problem is to create a function that takes a number _n_ and tests if it might be a Lychrel number. This is, re...

1年以上前

解決済み

Fermat's Last Theorem - Fermat's conjecture
Fermat's Last Theorem (sometimes called Fermat's conjecture, especially in older texts) states that no three positive integers a...

1年以上前

解決済み

Happy 2013...
Happy 2013, everyone! An interesting tidbit about 2013 is that it is the first year since 1987 to contain four different digits...

1年以上前

解決済み

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

1年以上前

解決済み

Determine if input is a perfect number
A perfect number occurs whent the sum of all divisors of a positive integer, except the number itself, equals the number. Examp...

1年以上前

解決済み

Kaprekar numbers
Test if the input is a Kaprekar number: <http://mathworld.wolfram.com/KaprekarNumber.html>. Return a logical true or false. ...

1年以上前

解決済み

Parasitic numbers
Test whether the first input x is an n-parasitic number: <http://en.wikipedia.org/wiki/Parasitic_number>. ( _n_ is the second in...

1年以上前

解決済み

Bell Triangle
Form the bell triangle upto nth bell number posotion; * if n=5 * y= [1 0 0 0 0; 1 2 0 0...

1年以上前

解決済み

find nth even fibonacci number
1st even fibonacci number=2 ; 2nd even fibonacci number=8 ..

1年以上前

解決済み

Polite numbers. N-th polite number.
A polite number is an integer that sums of at least two consecutive positive integers. For example _7 = 3+4_ so 7 is a polite...

1年以上前

解決済み

Polite numbers. Politeness.
A polite number is an integer that sums of two or more consecutive positive integers. Politeness of a positive integer is a num...

1年以上前

解決済み

Narcissistic number ?
Inspired by Problem 2056 created by Ted. In recreational number theory, a narcissistic number is a number that is the sum of ...

1年以上前

解決済み

Is it an Armstrong number?
An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. Fo...

1年以上前

解決済み

Determine if input is a Narcissistic number
<http://en.wikipedia.org/wiki/Narcissistic_number Narcissistic number> is a number that is the sum of its own digits each raised...

1年以上前

解決済み

Be happy
check whether the given number is happy in b-base. * A happy number can be defined as a number which will yield 1 when it is ...

1年以上前

解決済み

Frugal number
check whether n is a frugal number * a frugal number is a natural number in a given number base that has more digits than the...

1年以上前

解決済み

Pell numbers
Find the nth pell number <https://en.wikipedia.org/wiki/Pell_number>

1年以上前

解決済み

Is this number Munchhausen?
In this problem, simply return 1 if a supplied number is Munchhausen or 0 if not. Example 153 is narcissistic but not a Munchh...

1年以上前

解決済み

P-smooth numbers
This Challenge is to find <https://en.wikipedia.org/wiki/Smooth_number P-smooth number> partial sets given P and a max series va...

1年以上前

解決済み

Iccanobif numbers 1
There are a lot of problems in Cody that deal with Fibonacci numbers (1, 1, 2, 3, 5, 8, 13, 21 etc...) so let's turn things arou...

1年以上前

解決済み

Pentagonal Numbers
Your function will receive a lower and upper bound. It should return all pentagonal numbers within that inclusive range in ascen...

1年以上前

解決済み

generate nth pentatope number
https://en.wikipedia.org/wiki/Pentatope_number

1年以上前

解決済み

check whether a number is a pentatope number
<https://oeis.org/A000332>

1年以上前

解決済み

Amicable numbers
Test whether two numbers are <https://en.wikipedia.org/wiki/Amicable_numbers amicable>, meaning that the sum of the proper divis...

1年以上前

解決済み

Remove a specific column with max value
Remove the column that contain the max value in the matrix? If you like the problem, please give it a like:)

1年以上前

解決済み

Remove a specific row with min value
Remove the row that contain the min value in the matrix? If you like the problem, please give it a like:)

1年以上前

解決済み

Remove a specific row with max value
Remove the row that contain the max value in the matrix? If you like the problem, please like it :)

1年以上前

解決済み

Remove a specific column with min value
Remove the column that contain the min value in the matrix? If you like the problem, please give it a like:)

1年以上前