Josh

Last seen: ungefär 2 månader ago | Active since 2013

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Recaman Sequence - III
I want to create a Recaman sequence where there is a "1" in the n-th position. So from which integer should I start the Recaman ...

nästan 7 år ago

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Five steps to enlightenment
This problem asks you to identify valid variations of the famous <https://en.wikipedia.org/wiki/Sum_and_Product_Puzzle sum and p...

nästan 7 år ago

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Parse me a Lisp
*Description* In Lisp and its variants, function calls are done using parenthesis where the first item in the parenthesis is ...

nästan 7 år ago

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Birthday cake
It's Cody's 5th birthday, and you've been tasked with putting the candles on the cake. Your goal is to maximize the distance bet...

nästan 7 år ago

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Pandigital Multiples of 11 (based on Project Euler 491)
A "Pandigital number of order X" is one that contains all of the numbers from 0 to X, but with no leading zeroes. If X>9, the cy...

nästan 7 år ago

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Five-dimensional maze
*Description* The traditional maze is 2-dimensional: the navigator can move in the positive or negative directions along two ...

nästan 7 år ago

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Ned's Queens
A tribute to Cody's five-year anniversary should also celebrate the people behind Cody, and in this particular case, our illustr...

nästan 7 år ago

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Group-wise Euclidean distance
*Input*: * *x* —— An array of size *n-by-d*, where each row vector denotes a point in a d-dimensional space; * *g* —— A gro...

nästan 7 år ago

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The sliding puzzle: 3D
This is an extension of <https://www.mathworks.com/matlabcentral/cody/problems/42842 problem 42842>. In this case, the puzzle is...

nästan 7 år ago

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Circumscribed Pentagon?
Building off of <https://www.mathworks.com/matlabcentral/cody/problems/44368 Problem 44368>, your function will be provided with...

nästan 7 år ago

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Pair Primes
Let's define pair primes as follow; * *For 2 digits numbers:* 11 and 17 are pair primes because both of them are 2 digits pri...

nästan 7 år ago

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Hexagonal numbers on a spiral matrix
Put hexagonal numbers in a ( m x m ) spiral matrix and return the sum of its diagonal elements. Formula of hexagonal numbers ...

nästan 7 år ago

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Cache me Outside
The test suite includes a simple recursive Fibonacci sequence generator, but it's terribly inefficient. One simple method for im...

nästan 7 år ago

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Is this a valid Tic Tac Toe State?
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. ...

nästan 7 år ago

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Digit concentration in Champernowne's constant
Consider the first 50 digits of Champernowne's constant 0.12345678910111213141516171819202122232425262728293... The...

nästan 7 år ago

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An asteroid and a spacecraft
&#128640 Imagine a non-relativistic simple situation. Assume positions p0, p1, p2, and p3 are three dimensional Cartesian ...

nästan 7 år ago

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Sums of Distinct Powers
You will be given three numbers: base, nstart, and nend. Write a MATLAB script that will compute the sum of a sequence of both ...

nästan 7 år ago

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5th Time's a Charm
Write a function that will return the input value. However, your function must fail the first four times, only functioning prope...

nästan 7 år ago

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"Cody" * 5 == "CodyCodyCodyCodyCody"
*Alice*: What? *"Cody" * 5 == "CodyCodyCodyCodyCody"*? You've gotta be kidding me! *Bob*: No, I am serious! Python supports...

nästan 7 år ago

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Acid and water
⚖ ⚖ ⚖ ⚖ ⚖ ⚖ ⚖ ⚖ Assume that there is a 100 liter tank. It is initially fi...

nästan 7 år ago

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Number of Even Elements in Fibonacci Sequence
Find how many even Fibonacci numbers are available in the first d numbers. Consider the following first 14 numbers 1 1 2...

nästan 7 år 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...

nästan 7 år ago

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Pi Digit Probability
Assume that the next digit of pi constant is determined by the historical digit distribution. What is the probability of next di...

nästan 7 år 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...

nästan 7 år ago

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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...

nästan 7 år ago

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MATLAB Counter
Write a function f = counter(x0,b) to construct a counter handle f that counts with an initial value x0 and a step size b. E...

nästan 7 år ago

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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...

nästan 7 år ago

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Polarisation
You have n polarising filters stacked one on top of another, and you know each axis angle. How much light gets passed through th...

nästan 7 år ago

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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://...

nästan 7 år ago

Solved

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 =...

nästan 7 år ago

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