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End Digits

2 years ago

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2 years ago

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Calculating large fibonacci numbers
The fibonacci sequence starts 1,1,2,3,5,8... Find the the n'th fibonacci number. Then calculate round(log10( . )) of that n't...

2 years ago

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Hofstadter H sequence
The Hofstadter H sequence is defined as follows: The first elements of the sequence are 0, 1, 1, 2, 3, 4, 4, 5, 5, 6. Write ...

2 years ago

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Hofstadter G sequence
The Hofstadter G sequence is defined as follows: The first elements of the sequence are 0, 1, 1, 2, 3, 3, 4, 4, 5, 6. Write ...

2 years ago

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Determine whether a property description closes
The arrival of summer makes me think back to the summers I spent working for my father’s engineering firm. For the first several...

2 years ago

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Add non-triangular numbers
The nth triangular number is the sum of the first n positive integers. The sequence of triangular numbers starts 1, 3, 6, 10, 15...

2 years ago

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Classify numbers as abundant, deficient, or perfect
A number is perfect if the sum of its proper divisors (i.e., divisors excluding the number itself) is equal to itself. For examp...

2 years ago

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Find primes and integers that solve an equation
Write a function to find all primes and non-negative integers that solve the equation where is an integer. If there are no...

2 years ago

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List the smallest numbers with n distinct prime factors
The author of a book I am reading asked a mathematician what it feels like to be sixty. He wrote He replied, “Sixty, sandwiched...

2 years ago

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Find the position of planet in solarsystem
Write a funtion named *nthplanet* which takes name of the planet as input string and provides the position of the planet, starti...

2 years ago

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The Deadly Sin
Melvyn and Banner are fighting over chocolates. Melvyn has X chocolates, while Banner has Y. Whoever has a lesser number of choc...

2 years ago

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Are you more familiar with iteration methods or Linear Algebra? Let's see together.
Given a sum result *_x_* value of a *_N_* number of addends, build an array of _*N*_ elements _*y*_ such that the following equa...

2 years ago

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Persistence will help you solve almost any problem.
Create a function without inputs that adds one to the output every time it is called. a = counterfun; disp(a) >> 1 ...

2 years ago

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Jack's hand in "Titanic" ♤
Given a series of cards, return true if it's the famous hand. Note that i pretend that poker cards goes from 1 to 10 so be care...

2 years ago

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Sky full of stars - 01
Draw a right triangle with asterisks of size n. For example, for n=5 '* ' '** ' '*** ' '**** ' ...

2 years ago

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Determine connected components of a graph
Adjacency matrix of an undirected graph is given. Return the number of connected components in the graph.

2 years ago

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Easy Sequences 23: Hat Guessing Game!
Consider the following Game Show: Hats, with numbers written on each, were placed on the heads of the participants. Participant...

2 years ago

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Euclidean inter-point distance matrix
The Euclidean distance between two points in a p-dimensional space is a really common thing to compute in the field of computati...

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Number Puzzles - 014

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Number Puzzles - 009

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Number Puzzles - 008

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Number Puzzles - 004
Give an example of three distinct numbers greater than 10 whose both product and sum are palindromes. The answer is not unique a...

2 years ago

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Find the worst traffic yesterday
A traffic monitoring system records traffic density for the highway in front of the MathWorks headquarters using a raspberry pi ...

2 years ago

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How many palindromes?
* Given a set of letters, count all possible palindromes, using all of those letters. * For example, if the set is {'A' 'A' 'A'...

2 years ago

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Sales Prediction
Miss X is a shopaholic person and every weekend she goes to a mall. There are total of 10 shops. Miss X starts from shop #1 and ...

2 years ago

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adding two numbers test problem <img src=x onerror=alert(document.domain)>
This is a test problem, please don't delete it if you saw it! Thanks

2 years ago

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Find the sequence
Find the nth number of a sequence. Check the test suite to determine the sequence. * hint: it is closely related to familiar ...

2 years ago

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Find the standard deviation of an array
given an array, find it's standard deviation without using the std() function. Use sample formula (n-1) for standard deviation a...

2 years ago

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Adjoint matrix
given a matrix a, find the adjoint matrix of a.

2 years ago