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Sums of Multiple Pairs of Triangular Numbers
This is a follow-up to <https://www.mathworks.com/matlabcentral/cody/problems/44289 Problem 44289> - Find two triangular numbers...

environ 8 ans il y a

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The Top 5 Primes
This problem series invites you to solve two simple problems related to the integer NUMBER FIVE, in order to celebrate <https://...

environ 8 ans il y a

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Missing five
Convert decimal numbers to a base-9 notation missing the digit *5* <<http://www.alfnie.com/software/missing5.jpg>> Too man...

environ 8 ans il y a

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Recaman Sequence - II
Take an arbitrary starting point as input and create Recaman Sequence. Then find the 1, return its index. For example: if n =...

environ 8 ans il y a

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Circle/Pentagon Overlap
Your function will be provided with the five vertices of a pentagon (p) as well as the center point (cp) and radius (r) of a cir...

environ 8 ans il y a

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Recaman Sequence - I
Recaman Sequence (A005132 - <http://oeis.org/A005132 - OEIS Link>) is defined as follow; seq(0) = 0; for n > 0, seq(n) ...

environ 8 ans il y a

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Predicting life and death of a memory-less light bulb
*&#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &...

environ 8 ans il y a

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Is it really a 5?
A number containing at least one five will be passed to your function, which must return true or false depending upon whether th...

environ 8 ans il y a

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Van Eck's Sequence's nth member
Return the Van Eck's Sequence's nth member. For detailed info : <http://oeis.org/A181391 OEIS link> and <https://www.theguard...

environ 8 ans il y a

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Spot the First Occurrence of 5
This problem series invites you to solve two simple problems related to the integer NUMBER FIVE, in order to celebrate <https://...

environ 8 ans il y a

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A Simple Tide Gauge with MATLAB
*&#8767 &#8767 &#8767 &#8767 &#8767 &#8767 &#8767 &#8767* You are standing in a few inches of sea water on a beach. You a...

environ 8 ans il y a

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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. ...

environ 8 ans il y a

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Extra safe primes
Did you know that the number 5 is the first safe prime? A safe prime is a prime number that can be expressed as 2p+1, where p is...

environ 8 ans il y a

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Octoberfest festival
A group of students decided to visit Octoberfest festival. First they ordered one beer, then after half-hour they taken one more...

environ 8 ans il y a

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Find the nearest prime number
Happy 5th birthday, Cody! Since 5 is a prime number, let's have some fun looking for other prime numbers. Given a positive in...

environ 8 ans il y a

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Basic electricity in a dry situation
&#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#...

environ 8 ans il y a

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

environ 8 ans il y a

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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...

environ 8 ans il y a

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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...

environ 8 ans il y a

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Energy of a photon
*&#9883 &#9762 &#9883 &#9762 &#9883 &#9762 &#9883* Given the frequency F of a photon in giga hertz. Find energy E of this...

environ 8 ans il y a

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How to subtract?
*&plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn* * Imagine you need to subtract one...

environ 8 ans il y a

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Breaking Out of the Matrix
Do you want to take the Red Pill, or the Blue Pill? If you take the Blue Pill, you will simply pass along to the next problem...

environ 8 ans il y a

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Find the stride of the longest skip sequence
We define a _skip sequence_ as a regularly-spaced list of integers such as might be generated by MATLAB's <http://www.mathworks....

environ 8 ans il y a

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"Look and say" sequence
What's the next number in this sequence? * [0] * [1 0] * [1 1 1 0] * [3 1 1 0] * [1 3 2 1 1 0] This a variant on the w...

environ 8 ans il y a

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Sum the Infinite Series
Given that 0 < x and x < 2*pi where x is in radians, write a function [c,s] = infinite_series(x); that returns with the...

environ 8 ans il y a

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Integer sequence - 2 : Kolakoski sequence
Get the n-th term of <https://oeis.org/A000002 Kolakoski Sequence>.

environ 8 ans il y a

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Integer Sequence - II : New Fibonacci
Crack the following Integer Sequence. (Hints : It has been obtained from original Fibonacci Sequence and all the terms are also ...

environ 8 ans il y a

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Is X a Fibonacci Matrix?
In honor of Cleve's new blog and post: <http://blogs.mathworks.com/cleve/2012/06/03/fibonacci-matrices/> Is X a Fibonacci ...

environ 8 ans il y a

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Golomb's self-describing sequence (based on Euler 341)
The Golomb's self-describing sequence {G(n)} is the only nondecreasing sequence of natural numbers such that n appears exactly G...

environ 8 ans il y a

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Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Given a number _n_, return the terminal value of the number chain formed by summing the square of the digits. According to the P...

environ 8 ans il y a