1,539 total contributions since 2012

Acoustics, Machine Learning, Signal Processing, Software

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Digit concentration in Champernowne's constant

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

3 months 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...

3 months ago

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An asteroid and a spacecraft

🚀 Imagine a non-relativistic simple situation. Assume positions p0, p1, p2, and p3 are three dimensional Cartesian ...

3 months 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 ...

3 months 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 ...

3 months 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...

3 months ago

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The sliding puzzle: 15

If you are unfamiliar with the sliding puzzle, enter the command _fifteen_ in your MATLAB command window (or search online, of c...

3 months 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...

3 months ago

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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...

3 months ago

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When Was That Goal Scored?

We want to find out when the goals were scored in a particular soccer game. For each game, we are given a "Goal Event Data" XML ...

3 months ago

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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...

3 months 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...

3 months 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...

3 months ago

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Acid and water

Assume that there is a 100 liter tank. It is initially filled with just distilled water. It is continuously drained at R...

3 months 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...

3 months 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...

3 months 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...

3 months 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...

3 months ago

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Inscribed Pentagon?

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...

3 months ago

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I Plead the Fifth

Write a function to provide a yes or no answer to the input string. However, it must plead the 5th amendment (return an empty st...

3 months 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 <http:// ...

3 months ago

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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...

3 months ago

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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...

3 months 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...

3 months ago

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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 =...

3 months ago

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Basic electricity in a dry situation

This is a very hypothetical situation between two individuals in a very dry atmosphere. He came running in rubber boots when...

3 months ago

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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...

3 months ago

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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...

3 months 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...

3 months ago

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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 <http:// ...

3 months ago